轮机英语历年真题47期

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《轮机英语》期末考试试卷附答案

《轮机英语》期末考试试卷附答案一、单项选择题(每小题4分，共60分)1. Modern linguistics differs from traditional grammar for it is mostly _________.（）A.prescriptiveB.descriptiveC. subjectiveD. Latin-based2. A linguist regards the changes in language and language use as ________.（）A. abnormalB. something to be fearedC.naturalD. unnatural3. Which of the following sounds is a voiced affricate?A. [dV]B.[tF]C.[z]D.[T]4. There are ___________morphemes in the word “disabled”?（）A. oneB. twoC. threeD. four5. In English, “dis-“ is called________?（）A. a free morphemeB. a suffixC. an infixD. a prefix6.Black English is probably the most widespread and most familiar ____ variety of the English language. （）A. regionalB. ethnicC. socialD. lower class7. The pair of words “alive” and “dead” are _____________.（）A. gradable antonymsB. complementary antonymsC. relational oppositesD. co-hyponyms8. ____ belong(s) to the Indo-European language family. （）A. EnglishB. GermanC. FrenchD. All of them9. The sentence “Kids like apples” is a___________.（）A. two-place predicationB. three-place predicationC. no-place predicationD. one-place predication10. What is the construction of the sentence: “The baby smiled?”（）A. subordinateB. coordinateC. exocentricD. endocentric11. F. de Saussure is a(n) _________ linguist. （）A. AmericanB. SwissC. BritishD. Russian12. Which of the following sounds is a voiced bilabial stop? （）A. [p]B. [m]C. [b]D. [t]13. Of the “words” listed below, __________ is not an English word. （）A. [spriN]B. [lkbi]C.[strikt]D. [5U:ziz]14. The affixes which manifest various grammatical relations or grammatical categories such as “-ing,-est” are called __________. （）A. derivational affixesB. free morphemesC. inflectional affixesD. roots15. The sentence containing two clauses joined by a linking word is called a ____________ sentence. （）A. coordinateB. simpleC. subordinateD. embedded二、填空题（每小题2分，共20分）1. Language is a system of a ____________ vocal symbols used for human communication.2.The linguistic study of meaning in the context of use is called p____________.3.The description of a language as it changes through time is a d___________ study.4.According to the Swiss linguist F. de Saussure, p___________ refers to the realization of language in actual use.5. The three branches of phonetics are labelled a____________ phonetics, auditory phonetics and acoustic phoneticsrespectively.6. M___________ is the smallest meaningful unit of language.7. S___________ is a subfield of linguistics that studies the sentence structure of language.8. The term a________ is used for oppositeness of meaning.9. S________ is the subdiscipline of linguistics that studies language in social contexts.10. Variation in language use associated with the sex of individual speakers is called g__________varieties.三、判断题（每小题2分，共10分）petence and performance mean, to N. Chomsky, much the same thing.（）2. The basic difference between a vowel and a consonant is that in the pronunciation of the former it is characterized by the absence of obstruction of the airstream and it does not have a place of articulation in the same sense as a consonant.（）3. In English, nouns, verbs, prepositions and adverbs are open classes since we can regularly add new words to these classes.（）4. Sentences are strings of words put together in a random order.（）5. Sense and reference are two terms often encountered in the study of meaning. They are two related but different aspects of meaning.（）四、翻译（每小题5分，共10分）1.1号重油分油机手动排渣后发生剧烈振动，经拆检清洁后装复，恢复正常工作。

轮机英语大证考试真题47期

第47期海船船员适任统考试题一、单项选择题1.The ______ engine is used for alternators and some times for main propulsion with a gearboxto provide a propeller of between 90 to 120 rpm.A.four-strokeB. two-strokeC. slow speedD. reversible2.The abbreviation “MIP” stands for ______.A.middle indicating pressureB. mean indicated pressureC. mean indicated pitchD. middleindicated power.3.The cetane number of a diesel fuel oil indicates its ______.A. viscosityB. acid contentC. heating valueD. ignition quality4. In a two-stroke engine the camshaft rotates at ______ the engine rotational speed.A. halfB. twiceC. the same speed asD. four times5. A diesel engine is similar the camshaft rotates at _______ the engine rotational speed.A. cross-headB. cylinderC. connecting rodD. spark plug6. It is easier to replace a dry cylinder liner than a wet one because ______.A.of the thin wall thicknessB.honing makes it easier to maintain the desired oil filmC. water seals are not requiredD. it fits more loosely due to a decrease in heat transfer through the composite wall7. A main bearing consists of two shells which are secured by means of studs and ______.A. tie rodsB.through boltsC.lead wiresD. bearing caps8. However fast of slow the combustion rate, it is still a ______ between carbon, hydrogen, sulphur and oxygen that releases heat.A. physical detormationB. state exchangeC. chemical reactionD. coalescence9. During the fuel injection period, fuel pressure must exceed cylinder gas pressure to ______.A. ensure penetration and distribution of the fuel in the combustion chamberB. ensure the needle valve is flushed clean during each injectionC. prevent combustion gas blowback into the open needle valveD. prevent reflected pressure waves when the needle valve closes10. In a diesel engine lube oil system, which of the following parts should be lubricated first?A. Camshaft bearingsB. Main bearingsC. Piston crownsD. Cylinder walls11. In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the ______.A. suction pressure regulatorB. thermostatic bypass valveC. sea water temperatureD. water level in the expansion tank12. Which of the diesel engine components listed increases air density and helps to improve engine operating efficiency?A. ImpellerB. Air bottleC. Air coolerD. Exhaust diffuser13. A large two-stroke /cycle direct reversing diesel engine is to be reversed. Prior to the admissiong of starting air you must ______A. line up the engine for restarting with light diesel oilB. reposition the fuel injection camC. change the intake and exhaust valve cam positionsD. place the starting cam ing the intermediate position14. Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?A. SensitivityB. PowerC. Speed dropD. Compensation15. Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the ______.A. cooling water leaving each cylinderB. fuel oil entering the injectorC. exhaust gases at various locationsD. lube oil at he bearing supplies16. After starting a diesel engine, which of the listed operating conditions should be checked first?A. Air box pressureB.Lube oil pressureC. Exhaust temperatureD. Raw water pressure17. To shut down a diesel engine after it exceeds the set maximum speed, which type of device listed should be used?A. Speed limiting governorB.Over-speed governorC. Over-speed tripD. Over-speed relay18. The treatment of the fuel oils involves storage, heating , filtering and ______.A. centrifugingB. pressurizingC. atomizationD. igniting19. A propeller, in order to operate efficiently, must rotate at a relatively ______ speed.A. highB. lowC. fastD. lowly20. Latent heat changes the ______ of water.A. physical stateB. temperatureC. atmospheric pressureD. sensible pressure21. The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent ______.A. accidental dry firing and overpressureB. uncontrolled fires in the furnaceC. explosions in the boiler furnaceD. overheating of the pressure parts22.Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler could result in ______.A. increased fuel consumptionB. increased feed-water consumptionC. fuel pump failureD. combustion control system failure23. Burner ignition failure in an automatically fired auxiliary boiler would be caused by ______.A. a burned out solenoid in the oil supply valveB. high temperature excess airC. incorrectly setting the hot-well dump valveD. an incorrectly positioned burner snubber ( 缓冲器) relay24. If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause may be ______.A. high steam pressure in the boilerB. abnormally high feed-water temperatureC. abnormally high boiler water temperatureD. steam demand exceeding feed pump capacity25. Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid ______ pressure.A. depending onB. in relative toC. regardless ofD. because of26. Aspur gear pump should be operated with the discharge valves ______.A. slightly openedB. throttledC. fully openedD.halfway opened27. An in dependent bilge suction is required for _______.A. ballast tanksB. sludge tanksC. machinery space bilgesD. cargo hold bilges28. To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the______.A. pump must always be primedB. volute must impart a radial and rotary motion of the waterC. suction side connection must guide the liquid to the lantern ringsD. stuffing box should not be allowed any water leakage29. An inadequate reciprocating bilge pump discharge is most often caused by ______.A. defective safety valvesB. clogged suction stranersC. scarred cylinder wallsD. clogged drain valves30. In a compression refrigeration plant, the hot, high pressure refrigerant gas is cooled by the sea water and becomes liquid in the ______.A. compressorB. condenserC. throttle valveD. evaporator31.The ______ only allows for adjustment of temperature in each room by the occupant manually controlling the air volume admitted.A. central air conditioning systemB. high velocity systemC. low velocity systemD. single duct system32. The opening of the humidifier’s valve of air-conditioner should be ______, when the circumstance temperature is raised to above 5～8℃in the winter.A. decreasedB. increasedC. fixedD. closed33. Under normal conditions, the quantity of air circulation becomes less and less. What is the reason?A. dirty delivery ductsB. too much refrigerantC. the fouling filtersD. high temperature outside34. When bilge water is heated in a holding tank, which one of the following statements is not accurate?A. The relative high temperature facilitates primary gravity separationB. Most of the oil and organic solvents are raised to the top layerC. The relative high the temperature is , the more the top oil will be collected.D. The normal high temperature has little use on the separation of emulsified oil.35.If separating effect of the oily water separator if not good, we can improve it by ______.A. flushing separator with cold waterB. increasing bilge water supply flowC. heat oily water properlyD. opening manual oil discharge valve36. Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler37. When does auxiliary burner of rotary nozzle type incinerator put into use?Ⅰ. when igniting Ⅱ. the waste oil for dealing with is too much Ⅲ. before stopping incineratorA. Ⅰ+ⅡB.Ⅰ+ ⅢC. Ⅱ+ ⅢD.Ⅰ+ Ⅱ+ Ⅲ38. When anaerobic bacteria convert the sewage to an inert sludge, ______.A. no oxygen is neededB. oxygen is necessaryC. oxygen is given offD. no gas is produced39. For a L.O. purifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will ______.A. be interruptedB. move downwardsC. move outwardsD. reatin original position40. When separating the lube oil without additive, it is usually working with hot water; the aim isto remove ______ from it .A. acidB. oil slugeC. mechanical impurityD. salinity41. If the bowl of a disk type centrifugal purifier when operated as a separator is not primed , the ______.A. oil has a tendency to emulsify in the bowlB. purifier will act as a clarifier at the discharge ringC. oil will be lost through the water discharge portsD. oil solids will be deposited only at the intermediate top disk42. Tube leaks in the distillate cooler of a two stage flash evaporator will result in ______.A. loss of second stage vacuumB. contamination of the distillateC. lower feed inlet temperatureD. contamination of the second stage condenser43. Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator, are removed by the ______.A. spray pipesB. demistersC. condensersD. splash baffles44. Overflow valve usually be used to ______.A. control the fluid flow through itB. prevent the pressure before overflow valve over the specified valueC. make the pressure after overflow valve steadyD. control the direction of oil flow45.Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?A. the hydraulic pumpsB. valvesC. hydraulic cylindersD. hydraulic motors46. Cargo handling unit is rated according to the ______ to be lifted.A. cargo craneB. jibC. safe working loadD. oil pressure47. The part of the anchor windlass that engages the anchor chain for lifting is called the ______.A. warping headB. fairleadC. wildcatD. capstan48. In automatic______, the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.A. cranesB.windlassC. capstansD. mooring winches49. The major source of chemical contaminants in hydraulic fluid is ______.A. microscopic steel shavingsB. abrasive wasteC. anti-oxidant compoundsD. oxidation by-products50. Before doing any work on a hydraulic system equipped with accumulators, you should ______.A. drain the accumulators and purge with oxygenB. bleed off all stored energy from the accumulators completelyC. charge the accumulators to prevent system enregy lossD. pump the hydraulic fluid into the accumulators to prevent fluid loss51. One factor that determines the frequency of an alternator is the _______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD.output voltage52. The frequency output of an operating alternators is controlled by the ______.A. relative speed of the rotor polesB. number of turns of wire in the armature coilC. strength of the magnets usedD. output voltage53. Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ______.A. slightly less than the line frequencyB. the same as the line frequencyC. slightly greater than the line frequencyD. have nothing to do with the line frequency54. If two A.C.generators are to be operated in parallel, the load is distributed evenly by ______.A. means of rheostatB. a balance coilC. adjusting the governor settingsD.changing excitation55. The first requirement for logical troubleshooting of any system is the ability to ______.A. collect all available data on a casualtyB. recognize normal operationC. identify the probable cause of symptomD. isolate the faulty component56. ______ is (are) not power supplied by main switchboard directly.A.Steering gear and windlassB. Navigation light and radio power panelC.Navigation device power boxD. Daily fresh water pump57. The emergency generator or emergency battery is connected to ______ on most large ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards58. ______connectors hold best if a wire is accidentally pulled or a connection becomes loose.A. Ring typeB. Fork typeC. Spade typeD. ‘ Push on ,pull off ’ type59. The primary function of an electric motor is to ______.A.develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance60. Fuses placed in series with a thermal trip-type circuit breaker are used for _____.A. time-delay protectionB. short-circuit protectionC. short duration surge protectionD. sustained overload protection61. Shore power must be ______ during dock repair.A. disconnectedB. switched offC. cut offD. connected62. The operator of electrical motors should keep a constant check on the loads they carry because ______.A. low loads necessitate frequent insulation cleaningB. exceeding nameplate values shortens useful lifeC. energy is wasted if full loading is not utilizedD. power factor correction methods are load dependent63. Before a marine diesel engine is started the cylinders and pistons must be ______.A. cooled to appropriate temperatureB. warmed up gradually to appropriate temperatureC. opened up and renewedD. ground and polished64. _______ is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB.Keeping constant loadC.Remaining constant temperatureD. Varying speed65. During ship manoeuvering, when the diesel is stopped, which of the following items is wrong?A. keep all systems running normallyB. main engine is available at any momentC. shut off the starting air bottle outlet valveD. pay attention to the changes of the system parameters66. A tank which has been sealed for a long period of time can be dangerous because _______.A.steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous vapors in the presence of moisture67. The class of fire on which a blanketing effect is essential to extinguish the fire is _______.A. Class ‘A ’B. Class ‘B’C. Class ‘C’D. Class ‘D’68.Fires in escaping flammable gas are quickly brought under control by ______.A. stopping the flow of gasB. reducing the chemical Chain reactionC. increasing the oxygen supplyD. cooling below the autoignition point69. Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?A. Carbon dioxide is corrosive when exposed to fireB. Carbon dioxide should be applied slowly to a large engine room fireC. Its total cooling effect is far greater than waterD. Its smothering effect is excellent for class B fires70. While on watch in the engine room, you hear a continuous sounding of the genreal alarm. Which of the following actions should you take?A. Make an entry in the official logbookB. Open the master control valves on the fixed CO2 systemC. Start the fire pump and check discharge pressureD. Secure auxiliary condenser overboard discharge71. To determine that a compartment contains sufficient oxygen to sustain life, you should use a/an ______.A. explosimeterB. oxygen indicatorC. fresh air indicatorD. emergency escape breathing device72. If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should ______.A. close the static leg filling valveB. close the overflow tank filling valveC. reduce the fuel oil pumping rateD. stop the fuel oil pumping operation73. The ______ tool is used in precision work to smooth or enlarge a slightly undersized hole.A. round outB. round lifeC. reamerD. hole driller74. During the dock repair, each sea valve must be disassembled, cleaned and ground well, the sealing surface between the valve and the valve seat should be checked and ratified by ______ before reassembled.A. chief engineerB. surveyorC. the engineerD. the technique personnel of the shipyard75. The additional mark ______ in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.A.BRCB.MCCC.AUT-0D.AUT-176. The Oil Record Book, as a part of the ship’s official logbook, shall be kept on board andpreserved for a period of ______.A. 3 years after making the first entryB. 2 years after the last entryC. 3 months after last entryD.3 years after the last entry77. The valid period of the International Oil Pollution Prevention Certificate on board isn’t move than ______.A. one yearB. two yearsC. four yearsD. five years78. During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ship’s detainment?A. failure of the proper operation of emergency generatorB. insulation of piping including exhaust pipes in engine room contaminated by oilC. improper operation of bilge pumping arrangementsD. damaged sanitary pump79. “Insufficiency of manning or insufficiency of certification of seafarer” is an identification of a ______.A. substandard shipB. standard shipC. over-standard shipD. reference ship80. STCW 78/95 Convention shall apply to seafarers _____ on board seagoing ships entitled to fly the flag of a Party.A. servedB. servingC. surveyedD. surveying81. All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible. _____ to prevent such pollution, particularly within the framework of relevant international and port regulations.A. stepsB. proceduresC. precautionsD. programs82. When the order given by bridge may have bad results, the duty engineer should______.A. inform the captain for a further considerationB. inform the captain, and not perform itC. stop the M/E immediately, and then inform the chief engineerD. stop the M/E immediately, and then inform the captain83. If an oil spill occurs on deck, you should ______.A. cover the area with foamB. cover the area with absorbent materialC. wash down immediately with a fire hoseD. wash down immediately with an oil dispersing solvent84. According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is ______.A. welcomeB. admitted in some special sea areasC. prohibitedD. acceptable85. The main objective of the SOLAS Convention is ______.A. to provide a solution of lowering pollution at seaB. to specify minimum standards for the members composing the watch at seaC. to specify minimum standards for ships considering their safetyD. to tell the company how to go about running their business86. Which of the following about ISM Code is not right?A. It aims to ensure safety at seaB. It aims to avoid damage to the environmentC. It aims to prevent human injury ot loss of lifeD. It aims to provide a method to run a company87. The ship security assessment is an essential and integral part of the process of developing and updating ______.A. the ship security planB. the company security planC. the port security planD.the national security plan88. In order to limit the introduction of alien species by ship, ______ was adopted on 13 Feb, 2004 at the IMO.A. Revised Marpol annexⅠB. Revised Marpol annexⅡC. International convention for the control and management of ship’ ballast water and sedimentsD. ISPS Code二、关联题第一组：Starting Air SystemThe engine is started with compressed air of max 30 bar. Minimum pressure required is 15 bar. A pressure transmitter PT301 mounted on the starting air line before the main starting valve has an indicator in the instrument panel. The supply line from the starting air bottles is provided with a nonreturn valve and a drain valve.The solenoid valve is electrical (remote control) or manual (on the engine)operated and send after activation a pilot air signal to the main starting air valve .Interruption of the control air doses the main starting air valve. After the main starting air valve is activated the air flows through the flame arresters to the starting air vavles in the cylinder heads. Part of the air flows via the starting air distributor to each of the starting air valves in the cylinder heads. The starting air distributor controls the timing of opening and closing of the starting air valves. On the moment the main starting air valve is operated also the governor booster is energized. The main starting air line is provided of a safety valve. Interlock valve is a safety device to avoid an engine start with engaged turning gear.89. As the engine is started with compressed air, the correct sequence of the following devices being activated is ______. 1. solenoid valve 2. starting air valve 3. starting air distributor 4. main starting air valve 5. governor boosterA.1,5,4,2,3B.1,4,5,3,2C.1,4,3,2,5D. 4,3,1,2,590. The underline sentence “ the governor booster is energized ” probably means_______.A. the governor booster is supplied with electric powerB. hydraulic oil is pumped into the governor boosterC. the governor starts to work before starting the engineD. the governor booster is supplied with pressurized air before starting the engine91. Which of the following components are attached to the air bottles?A. a pressure transmitter PT 301B. a non-return valve and drain valveC. a solenoid valveD. a starting air distributor92. When the engine is engaged with turning gear, ______ can keep the engine from starting.A. the control airB. the solenoid valveC. the main starting air valveD. the interlock valve 第二组：（1）The Company should establish procedures to ensure that the ship is maintained in conformity with the provisions of the relevant rules and regulations and with any additional requirements which may be established by the Company.(2) In meeting these requirements the Company should ensure that:(2.1) inspections are held at appropriate intervals;(2.2) any non-conformity is reported, with its possible cause, if known;(2.3) appropriate corrective action is taken; and(2.4) records of these activities are maintained(3) The Company should establish procedures in its safety management system to identify equipment and technical systems the sudden operational failure of which may result in hazardous situations. The safety equipment or system should provide specific measures aimed at promoting the reliability of such equipment or systems. These measures should include the regular testing of stand-by arrangements and equipment or technical systems that are not in continuous use.93. This passage concerns ______.A. the inspections of the ship and equipmentB. the reports of non-conformitiesC. the corrective actionsD. the maintenance of the ship and equipment94. In (2.4) of this passage, “these activities” refers to the following activities except ______.A. the establishment of any additional requirementB. the corrective action takenC. the inspection heldD. the reporting of any non-conformity95. According to this passage, some particular equipment should have specific measures to promote its reliability, because ___________.A. it is not in continuous useB. its sudden failure may result in hazardous situationC. its stand-by arrangements may not ne regularly testedD. it may not be identified by the Company’s safety management system96. This passage is probably taken from__________.A. the MARPOL ConventionB. the STCW ConventionC. the ISPS CodeD. the ISM Code。

轮机英语试题液压系统和设备.docx

Lesson 201817.A hydraulic motor may be driven by ____ .A.an electric motorB. a diesel engineC. a compressorD. oil1818.In a hydraulic system, _______ are used to protect the system from over pressure.A.stop valvesB. check valvesC. safety valvesD. reducing valves1819.Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?A.hydraulic pumpsB. valvesC・ hydraulic cylinders D. hydraulic motors1820.Among the basic categories of equipment, which of the following are used to Convert mechanical into hydraulic energy?A.The hydraulic pumpsB. ValvesC. Hydraulic cylindersD. Hydraulic motors1821.Among the basic categories of equipment, which of the following is used to Convert hydraulic energy into continuous rotary motion?A.Hydraulic pumpsB. ValvesC. Hydraulic cylindersD. Hydraulic motors 1822.The rotor of the hydraulic motor rotates at a speed proportional to the ____ •A.flow of oil B. pressure of oil C. A and B D・ temperature of oil1823.What type of valve is used to direct the flow of hydraulic fluid?A.Relief valveB. Direction control valveC. Stop valve D・ Pressure control valve1824.External and internal leakage in hydraulic systems may be caused by ____ .A.unusual vibrationB. excessive worn partsC・ abnormal pressure D. any of the above1825.Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?A.Hydraulic pumpsB. ValvesC. Hydraulic cylindersD. Hydraulic motors1826. ____ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.A.MotorsB. Check valvesC. Safety valvesD. Reducing valve1827.Which of the following can be used in hydraulic transmission system?A.Hydraulic oil B・ Animal oilC. Light oilD. Fuel oil182& A hydraulic machine is one that uses ____ to do work.A.liquidB. steamC. gasD. electricity1829.Hydraulic machinery failures are commonly caused by misalignment of thesystem components and by ____A. hydraulic fluid contamination C.turbulent fluid flow1830. Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ____ .A. fluid frictionB. fluid turbulenceC. component misalignment D ・ pressure surges1831. Overheating of a hydraulic system may be a result of ____ •A. changing pump discharge pressure in response to normal load variationsB. a high oil levelC ・ incoiiect fluid viscosityD. continued slow re-circulation of the oil1832. Which of the following statements describes the functions of a reservoir used in a hydraulic system?A. Dissipate heat. B ・ Trap foreign matte 匚C ・ Separate air from the oil. D. All of the above.1833. When normal operating pressure is applied to the hydraulic oil used in a high-pressure system, the oil ____ •A. viscosity will decreaseB. volume will increaseC. volume will decreaseD. pour point will be reduced1834・ Which characteristic or condition will have the greatest effect on increasing a hydraulic oil's viscosity?A. Pour pointB. Cloud pointC. VacuumD. Pressure1835. Sluggish response or action of the hydraulic actuators may be a result of ___ .A. insufficient loadB. excessively high oil viscosityC. relief-valve pressure setting too highD. reservoir level being maintained two inches above normal1836. Flexible hose under pressure in a hydraulic system will ____ ・A. tend to twist about its long axisB. expand in length and in diameterC. contract in length and expand in diameterD. flex at right angles to the applied pressure1837. Pressure in an operating hydraulic system is developed ____ .A. only by the pump as its primary functionB. by resistance to the fluid flow through the systemC. by the thermal input to the system's fluidD. solely by the charge applied by the accumulatorsB. excessive fluid friction D. fluid pressure surges1838・ When installing a hydraulic hose, which of the following precautions should be taken?A.The hose should not be twisted.B.The hose should be protected with a sleeve if it is subjected to rubbing.C.There should be some slack in the hose.D.All of the above.1839・ Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A. Pressure-reducing valve.B. Unloading valve.C. Counterbalance valve.D. Pressure-relief valve.1840.In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause ____ .A.molecular fluid vibrationB.energy lossesC.wide pressure variationsD.mechanical damage to control valves1841.If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should ____ .A.add fluid that is the same color as the fluid in the reservoirB.add turbine oil because it is always a good substituteC・ add any oil that has the same viscosity as the hydraulic fluidD.check the winch manufacturers instruction book1842.A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ____ .A.the four-way control valve failing to shiftB.the bleeder valve sticking in the open positionC.cold hydraulic fluidD.a clogged air vent falter on the oil reservoir1843.If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be ____ •A.a low load on the unitB.a clogged pump suction strainerC.a blockage in the line between the pump and hydraulic motorD.the hydraulic motor turning too fast1844・ The major source of chemical contaminants in hydraulic fluid is __ .A. microscopic steel shavingsB. abrasive wasteC.anti-oxidant compoundsD. oxidation by-products1845.An internal bypass is provided on some hydraulic system suction strainers tohelp reduce the possibility of ____ .A. aeration of the oilB. contamination of the oilC. pump cavitationD. spongy actuator movements1846.Overload protection on hydraulic system is provided by the use of ___ •A. stop valvesB. pressure relief valvesC・ balance valves D. regulating speed valves1847.It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are _____ before the pump driving motor can be started.A. in the pert positionB. in the starboard positionC・ in the neutral position D・ to be dismantled1848.Which of the following hydraulic systems is not one of the three sub-division of the Hydraulic drive system?A. Constant pressure systemB. Variable pressure systemC. Variable displacement systemD. Constant volume system1849.A variable displacement system of hydraulic drives consists of ___ .A.a variable displacement axial piston pumpB.a constant displacement axial piston pumpC.a reciprocating piston pumpD.a centrifugal pump1850・ Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion.A. hydraulic pumpsB. ValvesC. hydraulic cylindersD. hydraulic motor1851. __ a re used to limit the pressure in any particular portion and mainly control the pressure after the valve.A. Relief valveB. Check valveC. Safety valvesD. Reduces valve1852.The rotor of the hydraulic motor rotates at a speed proportional to theA .flow of oil B. pressure of oil CA andB D temperature of oil 1853.What type of valve is used to direct the flow of hydraulic fluid?A. Relief valveB. Check valveC. Stop valve D・ Pressure control valve1854. ______ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.A. MotorsB. Check valvesC. Safety valvesD. Reducing valve1855.Which of the following can be used in hydraulic transmission system?A. hydraulic valves B・ animal oil C・ light oil D. fuel oil1856・ Among the basic categories of equipment, which of the following are used to convert are hydraulic energy into linear motion?A. hydraulic pumps B・ Valves C. hydraulic cylinders D. hydraulic motor1857.Which one of following statements is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?A.the direct acting relief valve is used for controlling lower flows and pressuresB.the pilot operated relief valve is used for controlling higher flows and pressure C ・ the pilot operated relief valve is used for controlling lower flows and pressure D.the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valvepensated flow control, or constant flow valves are used in hydraulic systems to ______ ・A. compensate for major leaks in the systemB. maintain the original fluid viscosityC.allow for changes in pressure and temperature within the systemD.assure constant fluid temperature1859.If a hydraulic pump is overheating, the cause may be ___ .A.excessive internal leakage in the pumpB.low discharge pressure and fluid flowC.excessive fluid level in the hydraulic reservoirD.operation of the pump at 100% efficiency1860.Check valve is used to control ____A.direction of oil flowB.pressure of return oilC.byass of filterD.high pressure overflow1861.Hydraulic control check valve is generally used to _________ in the marine hydraulic mechanism.A control the back pressure of return oilB lock the oil lines under some conditionsC change the direction of oil flowD act as relief valve1862.Overflow valve is used to ____A control the fluid flow through itB prevent the pressure before it over the specified valueC make the pressure after it steadyD control the direction of oil flow1863.Generally the symbol (GB786.1-93) of overflow valve is ____ABC1864. _______________________________________ The symbol (GB786.1-93) at right side represents ___________________________ ▼A. overflow valve valve B reducing valve C relief valveD sequence1865. The symbol (GB786.1-93) at right side representsA. overflow valve B reducing valve C relief valve D sequencevalve1866・ ___ can be used to prevent hydraulic system overloaded or keep thepressure of oiloutlet from pump constant.A Overflow valveB Reducing valveC Balancing valveD Reducing valve or balancing valve1867. Which of the following problems will occur if the internal drain at either end of a hydraulic , two-way, spool-type directional control valve cylinder were to become plugged ?A ・ The reservoir would become vapor bound (范圉)B. The valve would be placed in hydraulic lockC ・ The spring loaded relief ports would openD. The buffering chambers (缓冲室)would be unable to function1868.in the variable delivery pump, moving the spindle more from the central pointwill cause _______ fluid to be pumped and consequently __________ pressure is generated to drive the rams.A more; moreB more; lessC less; moreD less; less1869. When the tilting box of a variable stroke axial-piston pump is perpendicular tothe pump shaft, which of the following conditions will exist?A the pistons reciprocateB the “B” end cylinder barrel rotatesC there is no fluid flowD power is transmitted hydraulically1870.Auxiliary components for hydraulic systems include accumulators,，reservoirs, heat exchangers, seals, pressure gauges and so on.A hydraulic pumpsB filtersC reservoirsD hydraulic control valves1871.Auxiliary components for hydraulic systems include accumulators, filters, reservoirs, _______ , seals, pressure gauges and so on.A hydraulic control valvesB hydraulic pumpsC hydraulic actuatorsD heat exchangers1872.Which of the following is not the advantage of hydraulic transmission?A the hydraulic transmission can easily realize automation and the pressure, flow rate and the flow direction can be regulated and controlledB the hydraulic system cannot protect from over-load easily, which can be done by electricitynor machine equipmentC hydraulic equipment has a good working stabilityD a hydraulic system can produce higher power than electrical equipment under the same volume1873.Which of the following is not the advantage of the hydraulic transmission?A more energy loss exists in a hydraulic transmission because of the oil leaks in hydraulic systemB hydraulic equipment has a good working stabilityC a hydraulic system can produce higher power than electrical equipment under the same volumeD the hydraulic system can protect from over-load easily, which cannot be done by electricity or machine equipment1874.A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oil. Another function is to _____________A.act as a shock absorberB.maintain the stored oil under pressureC・ act as a base or foundation for the power unitD.eliminate pressure surges in the system。

轮机英语真题46期,甲类三管轮

轮机英语全国统考试题(总第46期)一、单项选择题1. In order to control thermal stresses,some types of modern engines use pistons with .A.heavy wall and intensive coolingB.heavy wall and no coolingC.thin wall and no coolingD.thin wall and intensive cooling2. The average pressure exerted on a piston during each power stroke is termed .A.indicated horsepowerB.mean eff ective pressureC.exhaust back pressurepression pressure.3.The ignition quality of a diesel f uel is indicated by theA.cetane numberB.volatility pointC.viscosity indexD.octane number4.A piston in a f our-stroke/cycle diesel engine makes f our strokes during eachA.crankshaf t revolutionB.mechanical cycle of operationC.period of two combustion cyclesD.cycle of two events5.Crankshaf ts of medium speed engines are f rom a single piece of steel.A.unusually solid weldedB.never be solid f orgedC.almost invariably solid f orgedD.almost invariably be welded6.The start ing air entering the cylinder begins when the piston .A.has nearly come to the TDCB.has just past the TDCC.has nearly come to the BDCD.has just past the BDC7.A main bearing consists of two shells which are secured by means of studs and .A.tie rodsB.through boltsC.lead wiresD.bearing capspared to f our-stroke/cycle engines,two-stroke/cycle diesel engines have the disadvantage of.A.less even torqueB.higher cylinder head temperaturesC.f ewer power strokes per revolutionD.greater weight/size requirements9. controls the f uel oil temperature in order to provide oil at the correct viscosity f or combustion.A.The viscosity regulatorB.The temperature controllerC.The f low meterD.The pressure switch10.In a diesel engine lube oil system,which of the f ollowing parts should be lubricated f irst?A.Camshaf t bearingsB.Main bearingsC.Piston crownsD.Cylinder walls11.A large,low-speed,main propulsion diesel engine uses sea water to directly cool theA.cylinder headsB.exhaust valvesC.scavenging airD.injectors12.In a turbocharger , inlet air velocity is increased in the .A.inlet nozzle ringB.stationary dif f user passagespressor outlet voluteD.rotating impeller vanes13.Each cylinder has one starting valve which is usually opened by air pressure and closed byA.nuts nad boltsB.new jointsC.spring f orceD.sealing rings14.In a simple mechanical governor, theA.centri f ugal f orce rotates the ball-headB.f lyweight centri f ugal f orce is balanced by spring f oceC. f lyweight centri f ugal f orce is balanced by hydraulic pressureD.speeder spring alone actuat es the f uel control rod15. A pyrometer is an instrument commonly used to measureA.cylinder pressureB.f lame intensityC.exhaust gas temperatureD.crankshaf t axial alignment16.Af ter starting a diesel engine,which of the listed operating conditions should be checked f i rst?A.Air box pressureB.Lube oil pressureC.Exhaust temperaturesD.Raw water pressure17.A high temperature alarm or which will melt is used to guard against the explosion of compressor air pipelines. A.a f lame trap B. a relief valveC.a f usible plugD.a bursting cap18. What preventative maintenance should be done frequently to diesel engine starting air receivers?A.Drain the accumulated moisture.B.Test the relief valves.C.Watch the temperature to prevent f luctuations in pressure.D.Clean the interior to remove oil and f oreign matter.19.In reducing engine speed to and eff i cient propeller speed by the use of reduction gears,A.speed and torque are both reducedB.speed is reduced and torque remains unchangedC.speed is reduced and torque is increasedD.speed is sometimes unchanged while torque is increased20.Which of the f ollowing statements concerning f ire-bube boilers is correct?bustion gases f low through the tubes.B.Flames impinge on the tubes.bustion occurs in the tubes.D.Water f lows through the tubes.21.The exhaust boilers are used to recover some of carried in the exhaust gas f rom the main engine .A .water B.oil C.heat D.steam22.The water level in a steaming auxiliary boiler will always .A.rise when the steam pressure is increasedB.remain constant as long as the f eed pump operatesC.f all when the steam pressure is decreasedD.vary as the steam demand changes23.When lighting of f an auxiliary boiler,which of the problems listed could cause the burners to sputter?A.Cold f uel oilB.Low f uel oil pressureC.Low atomizing steam pressureD.Water in the f uel oil24.If the f eed pump f or and auxiliary boiler f ails to deliver the f eed water to the boiler,the cause may beA.high steam pressure in the boilerB.abnormally high f eed-water temperatureC.abnormally high boiler water temperatureD.steam demand exceeding feed pump capacity25.Through a pump,the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.A.positive displacementB.ejectorC.centrif ugalD.air compressor26.Sealing lines provide sealing liquid f low to the stuf f ing box of a centri f ugal pumpA.to prevent seawater from passing out the stuff ing box when a high suction head is presentB.to cool the shaf tC.in place of mechanical sealsD.in place of lantern rings27.Which of the valves listed will be cycled from f ully open to f ully close when the handle is turned 90 degree?A. A rising stem gate valveB.A globe stop valveC.A check valveD. A butterf ly valve28.Centrif ugal pumps,used to handle hot liquids, must have a minimum f low through them under all operating conditions.This f low serves toA.prevent overheating and damage to pump rotating parts due to rubbingB.maintain the net positive suction head of the pumpC.maintain hydraulic dif ferential in the pump impeller passagesD.purge the pump of non-condensable vapors and gases29.If you heard a …crackling‟noise in a centrif u gal pump, the most probable cause of the problem would beA.insuff icient speedB.cavitationC.excess discharge pressureD.excessive net positive suction head30.In the process of,liquid changes into gas.A.evaporation Bf rostingC.condensingpressing31.The device used f or low-pressure control and high-pressure cutout on a compressor is called aA.cutoutB.pressure controllerC.controller switchD.cutout switch32.A purge recovery system is used in a central air conditioning or ref rigeration system toA.purge lube oil f rom the liquid refrigerantB.recover wat er purged f rom the systemC.separate f oul gases f rom the receiverD.purge non-condensabl e gases without losing refrigerant33.In an air conditioning system,low head pressure associat ed with a reciprocating compressor can be the result ofA.broken valve springsB.tight drive beltsC.high line voltageD.air in the system34.When discharging bilge water over board, which criteria must be observed?A.The requirement f or the oil content of bilge water discharged is under 15ppmB.No discharge in sensitive watersC.Any discharge in sensitive watersD.International, national or local requirements have to be observed35.The f ollowing measures can be used to improve oily water separator‟s separating effect exceptA.overhauling every two yearB.working at intervalsC.renewing f iltration materialD.properly heating36.Disposal of all kinds of garbage but listed as below is prohibited within Special Areas.minuted or ground papers, rags, glass, metal etcB.plasticsC.f ood waste comminuted or groundD.Incinerator ash37. When does auxiliary burner of incinerator put into operation?I.start incinerator when it is cold II. Little waste oil f or dealing with III. plenty of waste oil f or dealing with IV the water and impurity in sludge are too much V the temperature in incinerator is low VI dealing with little solid rubbishA.II+III+VB. I+II+III+IVC.I+IV+V+VID.I+II+III+VI38.Bacteria which live are said to be aerobic.A. in the presence of oxygenB.without oxygenC.in the presence of nutritionD.without nutrition39. When centri f uging heavy f uel oil, an important f actor to consider is(are) the .1)f low rate 2)viscosity of thef uel oilA. 1)B.2)C.both 1) and 2)D.Neither 1)nor 2) are correct40.To ensure lube oil purif ier working in normal condition, the interval between two sludge discharging should not exceed hours.A. 2B.4C.5 D641. can not cause oil f low f rom wat er outlet of sel f cleaning purif i er.A. Oil temperature too highB.Diameter of gravity disc too largeC. Oil temperature too lowD.High level tank out of water42. In the production of f reshwat er from seawater through a process of heating and cooling, the cooling phase of production is usually calledA.evaporation BdistillationC.dehydrationD.condensation43.Distilled water f rom an evaporator may be discharged into a potable water tankA. through a detachable hose connectionB.af ter passing through an activated charcoal f ilterC.af ter chemical analysis shows it is f it f or consumptionD.through a solenoid operated three-way valve44.What type of valve is used to direct the f low of hydraulic f luid?A.relief valveB.direction control valveC.stop valverD.pressure control valve45.Cargo hand ling unit is rated according to the to be lif ted.A. cargo craneB.jibC.saf e working loadD.oil pressure46. The crane is usually mounted on a pedestal to effer adequate to the operator. A.time B.spaceC.lengthD.visibility47.Proper internal lubrication of a hydraulic anchor windlass lef t idle f or extended penods can be accomplished by .A.perf orming a chech run on the unit at regular intervalsB.testing the hydraulic f luid f or proper PHC.checking the reservoir f or proper levelD.cleaning strainers at regular intervals48. are used f or hauling in or letting out the wires which f asten the ship to the shore.A.Cargo winchesB.Mooring winchesC.WindlassesD.Cargo hatches49. The major source of chemical contaminants in hydraulic f luid is .A.microscopic steel shavingsB.abrasive wasteC.anti-oxidant compoundsD.oxidation by-products50.If you install a new hydraulic hose in a hydraulic system, the hose must be long enough to allow f or contraction to prevent .A. f ailure of the hydraulic hoseB.excessive f low through the lineC.f riction in other areas of the hydraulic systemD.overheating of the hydraulic f luid51.A cirucit that has one wire in contact with the hull of the ship is aA.series circuitB.grounded circuitC.short circuitD.closed circuit52.The f requency of an alternator at a given r/min is determined by the .A.number of turns of wi re in the armature coilB.number of magnetic polesC.strength of the magnets usedD.output voltage53.The operation of paralleling two alternators requires the voltages to be and also in phase.A.zeroB.eliminatedC.diff erentD.equal54.The f requency of an AC generator is controlled by theA.rheostaternorC.exciterD.capacitor55.A motor enclosure which protects against falling liquids is classif ied asA.water-proofB.drip-proofC.spray-tightD.spray-proof56. are supplied with electricity by main switchboard directly.A.Suez Canal searchlight, air compressor and ai r conditioning compressorB.Air compressor, boiler blower and ref rigeration plantC. Boiler blower , Suez Canal searchlight and ref rigeration plantD.Suez Canal searchlight and boiler blower57. is not installed on the emergency switchboard.A. AmmeterB.V oltmeterC.WattmeterD.Synchroscope58.When two D.C.generators operate in parallel, they are protected against motorizing byA.blow out coilsernor relayC.under voltage tripsD.reverse current trips59.Moisture in a D.C. motor would causeA.short circuitB.speed upC.slow downD.hunting60.The part of a f use that melts and opens the circuit is made ofA.copper and antimonyB.steel and babbittC.aluminum or beryllium alloyD.zinc or an alloy of tin and lead61.The main purpose of an electric space heater installed in a large AC generator is toA.prevent the windings f rom becoming brittleB. prevent moisture f rom condensing in the windings during shutdownC. prevent acidic pitting of the slip ringsD. keep the lube oil warm f or quick starting62.Sparking at the brushes of a running motor could be an indication ofA.normal operationB.a dirty commutatorC.increased brush capacityD.water vapor absorption63. Prior to starting ,the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to \A. test the starting systemB. remove condensation from the cylindersC.check the compressionD.check f or proper lube oil pressure64. During the watch keeping at sea, should be logged or recorded in the engine log book.A.the running hours of the cooling water pumpB.chief engineer‟s orderC.the main parameters of main and auxiliary equipments.D.the position of the vessel65. During ship manoeuvering, when thd diesel is stopped, which of the f ollowing items is wrong?A.keep all systems running normallyB. main engine is available at any momentC.shut off the starting air bottle outlet valveD.pay attention to the changes of the system parameters66.Which of the listed conditions can be considered as the single greatest cause of accidents?A.SpeedB.Excessive knowledge or skillC.Human errorD.Excitement67.On a tank vessel, which of the f ol lowing substances would be burning in a class “B”f ire?A.OilB.WoodC. RagsD.Electrical wiring68.The most likely place f or a f ire to start through the process of spontaneous combustion is inA. an electrical switchboardB.the pressure tanksC.the f uel oil tanksD.the oily rag bin69.Which of the f ire extinguishers listed is to be weighed annually and sent ashore f or recharging if the weight loss exceeds 10% of the weight of a f ull charge?A.FoamB.Soda acidC.Dry chemicalD.Carbon dioxide70.While on watch in the engine room,you hear a continuous sounding of the general alarm.Which of the f ollowing actions should you take f irst?A. Secure the burners then proceed to your assigned boart station.B.Start the f ire pump and establish f low to the f ire main.C.Open the guardian valve and standby to maneuver.D.Open the master control valves on the f ixed CO2 system.71.If there were a f ire in the bunker tanks, you shouldA.close the ventB.pump out the tankC.activate the f ixed CO2 systemD.cut off the heating coils72.To avoid excessive surge pressure when bunkering , you shouldA.bunker at a normal rateB.check f or kinks in hoseC.close valves slowlyD.shut valves bef ore topping off73. ,where minor repairs are carri ed out with a ship in sevice,of ten during a stay in prot. This may be remote from a ship repair site.A.V oyage repairsB.Routine dockingC.Daage repairsD.Conversion74. When is the dock survey carried out ?A.During annual repairually during dock repairC.Bef ore sea trialD.Af ter 5 years f rom last annual survey75.In the initial survey, compiles the survey report and f ills in certif icat e.A.surveyorB.chief engineerC.administratorpany superintendent 76.If an incorrect entry were made in the Oil Record Book, you shouldA.erase the entry and rewrite itB.notif y the ship‟s off icer-in-chargepletely black it out and make the correct entry alongsideD.draw a single line through the wrong entry and initial it.77.The International Oil Pollution Prevention Certif icate is valid f or a period ofA.one year f rom the date of issueB.f ive years from the date of issueC.three years f rom the date of issueD.f our years f rom the date of issue78. Which one is Not the …clear grounds‟f or a more detailed inspection?A. no operation procedures f or the oil separatorsB.engine log book missingC.the master and the chief engineer are unabl e to communicate effectivelyD.absence of an up-date muster list79. The Port State Control off icer may witness a f ire drill carried out by the crew assigned to these duties on theA.Navigation Log BookB.Engine Room Log BookC.Oil Record BookD.Muster List80.STCW 78/95 Convention shall apply to seaf arers on board seagoing ships entitled to f ly the f lag of a Party.A. servedB.servingC.surveyedD.surveying81.The main purpose of port State control is not toA.prevent an unsaf e ship proceeding to seaB.prevent a ship threatening the marine environmentC.f ine the shipsD.conf irm a saf e sailing82.The bridge should inf orm the engine room bef ore passing through congested or shallow waterway.A.24 hoursB.2 hoursC.1 hourD.15 minutes83.When the chief engineer is in the machinery spaces,the officer in charge of the engineering watch shallA.continue to be responsible f or machinery space operations despite the presence of the C/EB. hand over the responsibility to the chief engineer activelyC. be responsible f or the watching together with the chief engineer.D.assistant the chief engineer to contol the machinery.84.According to the international regulations concerning the prevention of pollution of sea areas f rom ships, the disposal into the sea of all plastics isA.welcomeB.admitted in some special sea areasC.prohibitedD.acceptable85.The ship emergency plan item does not include usually.I lif esaving, f ire f ighting II f irst aid III abandon shipA. IIB.IIIC.II IIID.I86. Under ISM Code, the ship to which it applies has to carryA. an International Ship Security Certif icat eB. an International Oil Pollution Prevention Cerif icatC.a Saf ety Managem ent Certif icateD. an International Ballast Water Management Certif icate87. The objective of ISPS Code isA. to protect the marine environmentB. to provide a method to avoid an accidentC. to protect the ship f rom collisionD. to keep terrorism action away f rom ships.88. According to “MARI TIME LABOUR CONVENTION,2006”,The maximum hours of work shall not exceedA.14 hours in any 24-hour periodB. 72 hours in any seven-day periodC.10 hours in any 24-hour periodD.88 hours in any seven-day period二、关联题（关联题题干下有4个小题，每小题4个选项）第一组Port State Control(PSC) is the inspection of f oreign ships in national ports f or the purpose of veri f ying that the condition of the ship and its equipment comply with the requirements of international conventions and that the ship is manned and operated in compliance with applicable international laws.The primary responsibility f or ensuring that a ship maintains a standard at least equivalent to that secif ied in internaitonal conventions rests with the f lag State and if all f lag States perf ormed their duties satisf actorily there would be no need f or port State control. Unf ortunately this is not the case as evidenced by the many marine accidents around the world-hence the need f or additional control.The authority f or exercising PSC is the national law based on relevant conventions. It is theref ore necessary f or a port State to be Party to those conventions and to have promulgated the necessary legislation bef ore exercising PSC. In accordance with the provisions of the applicable conventions,Parties may conduct inspections of f oreign ships in their ports Port State Control Off icers(PSCOs).89.The purpose of PSC is1) to check and inspect f oreign ships 2) to verif y the condition of a ship in compliance with requirements o f international conventions;3)to make sure that the ship is manned and operated well 4)to detain shipsA 1)2) B.2)3) C.1)3) D.123490.Who will be responsible f or ensuring that a ship maintains a standard at least equivalent to that specif i ed in international conventions?A.PSCOsB.Ship ownersC.Flag statesD.Port states91.Bef ore exercising PSC,a port state shouldA.become a contracting Party and promulgate regulations f or implementing PSCB.inf orm ship ownersC.establish proceduresD.inf orm shipping companies92. PSC inspection is implemented by throughA. f lag states/PSCOsB.f lag states/ship ownersC.port states/PSCOsD.port states/ship owners第二组Almost all f ailures in the f uel oil system,including the compression being to low,result in the crankshaf t rotating more slowly if there is a f ailure at one or more cylinders simultaneously. If only one or two cylinders fail, and the engine is not f ully loaded, the crankshaf t rev/min does not decrease, the reason being that the governor ensures that the remaining cylinders are loaded to a correspondingly great er extent. If the engine is already f ully loaded, the cylinders that are working normally become overloaded causing a smoking exhaust and higher exhaust temperatures etc. The load must always be reduced until the f ailure has been located and recti f ied. The reasons f or a cylinder suddenly working at reduced load, or failing completely, may be :1. a def ective or blocked f uel injection valve.2.the f uel oi l pump piston seizing in the barrel. This f ailure can be ascertained by trying to move the pump‟s toothed rack.Defective f uel pumps must be changed.3.the compression being to low because of sticking , worn or broken piston rings.4 leaking inlet or exhaust valves5. no clearance in the valve operation gear.The reasons f or the crankshaf t rotating more slowly, or stopping completely,can also be:1. the f uel oil f ilter being blocked. This f ailure is identif ied by decreasing oil pressure af t er the f uel oil f ilter.2.valve sticking in the open position3.leaking f uel oil pipes or joints.4.water in the f uel oil5.the regulating mechanism being jammed6.the governor not f uncitoning correctly.7the electrical shutdown valve(the monitoring system)being activated.93.This passage is mainly aboutA.the f ailure of reduced rpm.B.the f ailure of the governorC.how to ensure the constant rotational speedD.the reasons f or the f uel system to shut down94.If one or two cylinders fail in f uel oil system the crankshaf t rev/min .1)will invaviably decrease 2)does not decrease 3)will decrease under certain circumstancesA.1B.2C.3D.None of 1 2 3is true95. Which of the f ollowing is NOT mentioned as the reason f or a cylinder suddenly working at reduced load?A.f uel valve f ailureB.f ailure of f uel pump discharge valvesC.too large gaps of piston ringsD.the f uel oil f ilter being blocked completely96.Which of the f ollowing is NO T mentioned as the reason f or the crankshaf t rotating more slowly or stopping?A.changing f rom heavy oil to light diesel oilB.connections leakingC.there being too much waterD.malf unction of the governor 46轮机英语的答案1- 5 DBABC 6-10 BDBAB11-15 CDCBC 16-20 BCACA 21-25 CDDBA 26-30 BDABA 31-35 BDADA 36-40 BCACB 41-45 DDDBC 46-50 DABDA 51-55 BBDBA 56-60 DDDAD 61-65 BBBCC 66-70 CADDB 71-74 ACABA 76-80 DBADB 81-87 CCAC ACD 88-AB 89-92 ~~~~ 93-96~~~~。

轮机系统英语试题及答案

轮机系统英语试题及答案一、选择题（每题2分，共20分）1. What is the primary function of a marine engine?A. To generate electricityB. To propel the shipC. To provide heatingD. To cool the engine2. The term "deadweight tonnage" refers to:A. The weight of the ship without cargoB. The maximum cargo capacity of the shipC. The weight of the ship fully loadedD. The total weight of the ship including cargo3. Which of the following is NOT a type of marine fuel?A. Heavy fuel oilB. Marine diesel oilC. Liquefied natural gasD. Gasoline4. What does the abbreviation "BOP" stand for in a ship's engine room?A. Ballast On PumpB. Blow Off PressureC. Black Oil PumpD. None of the above5. The main purpose of a ship's propeller is to:A. Generate electricityB. Provide stabilityC. Change the direction of the shipD. Convert rotational motion into thrust6. What is the role of a marine boiler?A. To produce steam for propulsionB. To cool the engineC. To provide fresh waterD. To heat the ship's interior7. The term "trim" in ship terminology refers to:A. The angle of the ship's bowB. The weight distribution along the ship's lengthC. The shape of the ship's hullD. The speed of the ship8. What does "GT" stand for in ship specifications?A. Gross TonnageB. Gross TransportC. General TransportD. Global Trade9. The main difference between a diesel engine and a steam turbine is:A. The type of fuel usedB. The method of converting thermal energy into mechanical energyC. The color of the engineD. The size of the engine10. What is the purpose of a ship's bilge system?A. To clean the ship's hullB. To remove water from the ship's interiorC. To provide fresh water for the crewD. To cool the engine答案：1. B2. B3. D4. D5. D6. A7. B8. A9. B10. B二、填空题（每空1分，共10分）1. The main components of a marine engine include the__________, the __________, and the __________.2. The term "draught" refers to the __________ of the ship below the waterline.3. A ship's hull is divided into several __________ to increase its structural integrity.4. The "load line marks" on a ship indicate the __________ of the ship when loaded with cargo.5. The "freeboard" is the distance between the waterline and the __________ of the ship.6. The "safety valve" in a marine boiler is designed to__________ pressure.7. The "main engine" is the primary source of __________ fora ship.8. The "stern tube" is the part of the ship where the__________ is located.9. "Machinery space" refers to the area where the ship's__________ are located.10. The "lifeboat" is a vessel designed to __________ people in case of an emergency.答案：1. engine, boiler, turbine2. depth3. compartments4. maximum permissible draft5. deck6. relieve excessive7. propulsion8. propeller9. engines10. rescue三、简答题（每题5分，共10分）1. Explain the difference between a single-screw ship and a twin-screw ship.2. Describe the function of a ship's anchor and how it is used.答案：1. A single-screw ship is propelled by a single propeller, which is driven by the main engine. It is simpler in designand usually less expensive to build and maintain. A twin-screw ship, on the other hand, has two propellers, each driven by an engine, which can be the same or different. This configuration provides better maneuverability, redundancy in case one engine fails, and often results in higher speeds.2. A ship's anchor is a device used to secure the ship when it is not in motion, particularly in harbors or at sea when the ship needs to be stationary. The anchor is dropped to the seabed, where it digs into the bottom, providing resistance to the ship's movement. The anchor is connected to the。

大管轮轮机英语综合(33-48期)

中华人民共和国海事局2004年第1期海船船员适任证书全国统考试题(总第33期)科目：轮机英语试卷代号：803适用对象：无限、近洋航区3000KW及以上船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。

第1题至68题，每题1分，第69题至76题，每题1.5分,第77题至78题,每题10分。

一、单项选择题：1．The exhaust valve is opened at about the same time ______the air inlet ports are opened.A. beforeB. afterC. whenD. until2．Cylinder wall temperature, fuel oil sulphur, and oil passage ______.A. are interdependentB. are not interdependentC. have nothing to do with each otherD. are independent3．Acid solution ______ in the system can be tested from time to time by putting some on to a piece of lime.A. strengthB. denseC. percentageD. velocity4．Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from ______.A. within the space concernedB. outside the space concernedC. the throttle stationD. within the fire room5．Cylinder oil is a high viscosity mineral oil, with a ______machined to the anticipated sulfur content of the fuel.A. TANB. TBNC. SAND. SBN6．The tendency for lubricating oil to thin out at high temperatures and thicken at low temperatures will be characterized by a ______.A. low viscosity indexB. high viscosity indexC. high neutralization numberD. low demulsibility quality7．When considering the lowest fuel system operating temperature, ______ are important.A. specific gravity or relative densityB. open flash point and closed flash point valuesC. higher calorific and lower calorific valuesD. cloud point and pour point values8．In ______the incoming air is directed upwards, pushing the exhaust gases before it and then the exhaust gases travel down.A. loop scavengingB. cross scavengingC. uniflow scavengingD. supercharging9．______ is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A. An air receiverB. An operating valveC. An automatic valveD. An air distributor 10．Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle, turbo-charged, diesel engine?A. Clogged air intake filters.B. Piston blow-by.C. A defective after-cooler.D. Faulty exhaust valves.11．Misalignment of an engine crankshaft can be detected by measuring______of crank webs for each unit of the engine.A. diametersB. lengthsC. deflectionsD. none of the above12．A crankshaft whose center of gravity coincides with its center line is said to be ______.A. dynamically balancedB. statically balancedC. counter balancedD. resonantly balanced 13．In a diesel engine, the main bearings are used between the ______.A. connecting rod and the crankshaftB. wrist pin and the connecting rodC. camshaft and the engine blockD. crankshaft and the engine block14．We should not start the engine unless the turning gear is ______.A. onB. disengagedC. boltedD. unscrewed15．When the exhaust ports or valves are opened, the ______begin to exhaust.A. carbon and waterB. refrigeration steamC. burnt gasesD. oil sludge16．We'd better take _____to save fuel consumption, you know it would be useless to get there earlier.A. nominal speedB. economical speedC. rated speedD. slow speed17．Shaft sealing in a centrifugal pump can be effected by ______.A. the mechanical sealB. packed stuffing boxesC. either A or BD. neither A nor B 18．Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be ______.A. one size smaller than the pump suction nozzleB. the same size as the pump suction nozzleC. one size larger than the pump suction nozzleD. installed with a short radius elbow at the pump19．The water level in a steaming auxiliary boiler will always ______.A. rise when the steam pressure is increasedB. remain constant as long as the feed pump operatesC. fall when the steam pressure is decreasedD. vary as the steam demand changes20．The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of ______.A. seawater contaminationB. frequent surface blowsC. dissolved oxygen deaerationD. frequent bottom blows21．Sediment collects in a tubular purifier______.A. on top coverB. on sides of bowlC. in drain line on the discsD. on the discs 22．The operating water is supplied under the ______of an oil separator.A. sliding bowl bottomB. bowl hoodC. bowlD. filter units23．The bilge main is arranged to drain any watertight compartment ______ballast, oil or water tanks and to discharge the contents overboard.A. rather thanB. other thanC. in addition thatD. except for24．The oil sludge is burnt in the ______onboard. I‟ll show you the ashes.A. boilerB. main engineC. auxiliary engineD. incinerator25．When making entries in the Oil Record Book, the date, operational code, and item number shall be inserted in the appropriate columns. Furthermore, the required particulars shall be ______.A. recorded only for accidental oil dischargesB. recorded only for operations involving discharge of oily wasteC. signed by the oiler who enters them in the Oil Record BookD. recorded chronologically in the blank space26．Which bearing will carry the load on two small points diametrically opposite to each other?A. NeedleB. Tapered rollerC. RollerD. Ball27．In a general cargo crane, ______ is fitted to raise or lower the jib.A. the slewing motorB. the luffing motorC. the hoisting motorD. none of the above 28．In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?A. When the helm is at any angle other than amidships.B. When the six-way valve is opened.C. When the ram relief valves lift.D. When the rudder angle is different from the position of the helm.29．With reference to rules governing steering gear, which one of the following rules is incorrect ?A. It is required that all ships are provided with two independent steering gear systems that is onemain and one auxiliary.B. The auxiliary gear could be power operated in passenger ships.C. The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigablespeed.D. All moving parts of the steering gear must be guarded against any possible damage.30．A refrigeration system contaminated with moisture can be affected by ______.A. acid formationB. sludge formationC. ice in the expansion valveD. all of the above 31．A dirty intercooler on the ship service air compressor will result in ______.A. decreased compression ratioB. higher than normal power consumptionC. un-loader malfunctionD. water in the lubricating oil32．Which of the problems listed would cause the discharge temperature of an R-22 refrigeration compressor to increase?A. Thermal expansion valve frozen open.B. Suction gas heat exchanger bypassed.C. Condenser clogged or fouled.D. High pressure cutout switch inoperative. 33．Zinc rods are installed in the refrigeration system ______.A. liquid strainerB. liquid receiverC. saltwater condenserD. evaporator34．The fire pumps must be capable of delivering a total quantity of water at a defined head , not less than______ of the total bilge pumping capacity.A. one-thirdB. two-thirdsC. one-fourthD. two-fourths35．Which of the following factors will have the greatest effect on the heating load within a conditioned space?A. Solar gainB. Infiltration and ventilation airC. Occupants inside the spaceD. Entertainment equipment within the space36．On commonly used ships, if two A.C. generators are operated in parallel, the load is distributed evenly by ______.A. varying the D.C. exciter voltageB. varying the reluctance of the air gapC. regulating the speed of prime moverD. shorting out part of the armature windings 37．Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?A. The generator and bus transfer sectionB. The 450 volt, 60 cycle, 3 phase busC. The 120 volt, 3 phase, 60 cycle busD. The 24 volt DC bus38．Which of the following should be the FIRST step in removing a generator from parallel operation?A. Trip the generator off the switchboard.B. Turn off all electrical equipment.C. Remove the load from the 'off going' generator.D. Increase the cycles of the generator staying on the line.39．Which of the listed devices is used to measure pressure and convert it to an electrical signal?A. TransducerB. ReducerC. TransformerD. Rectifier40．An indicator on the main switchboard should show ______the emergency battery is in service or not.A. whichB. whenC. weatherD. whether41．The number of cycles per second occurring in AC voltage is known as the ______.A. phase angleB. frequencyC. wave formD. half mode42．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?A. Make an entry in the official logbook.B. Open the master control valves on the fixed CO2 system.C. Start the fire pump and check discharge pressure.D. Secure auxiliary condenser overboard discharge.43．The additional mark ______ in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery andelectronic devices.A. BRCB. MCCC. AUT-0D. AUT-144．If the atomizer holes are enlarged beyond the maker's recommended size , the atomizer must be ______.A. repairedB. replacedC. replenishedD. repeated45．In a diesel engine, an extremely leaking exhaust valve can cause ______.A. misfiringB. pre-ignitionC. interrupted scavengingD. reduced scavenging 46．One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply to that cylinder is secured. Which of the following problems may be the cause?A. Low loading of the cylinder.B. Excessive cooling of that piston.C. Sluggish ring action on the piston.D. A mechanical defect in a working part.47．Poor combustion in a diesel engine can be caused by ______.A. high compression pressureB. low intake air temperatureC. low exhaust pressureD. high scavenge air temperature48．Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ______.A. reduce engine horsepower outputB. aid in silencing the exhaust noiseC. increase the mean effective pressureD. contribute to effective cylinder scavenging 49．Hearing a strong noise, ______at once.A. the engine stoppedB. the engine was stoppedC. he stopped the engineD. he had stopped the engine50．Fix the fuel injector into______after repair.A. the cylinder linerB. the cylinder coverC. the cylinder jacketD. the piston 51．Lower suction pressure of a pump may be caused by ______.A. too much air in the pipe lineB. closed inlet valveC. empty tankD. leaky pipe52．Diesel engine exhaust temperatures may be used to indicate ______.A. leaking exhaust valvesB. an overloaded cylinderC. a clogged injector nozzleD. all of the above.53．The indications of a scavenge fire are excessive black smoke, ______ and peeling from scavenge trunking.A. turbo-chargers surgeB. spark seen from the drainsC. paint blisteringD. all above are right 54．It is well known that the whole power distribution of the ship‟s electrical services mainly depend on the______.A. sub-boardsB. main switchboardsC. emergency switchboardsD. distribution boards 55．Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ______.A. a shortened ignition delay periodB. a lean fuel/air mixtureC. excess fuel in the combustion chamberD. rapid vaporization of injected fuel droplets56．Oil mist detectors are usually used on board to detect oil mist density within ______.A. the engine crankcaseB. the engine scavenge boxesC. drain tanksD. fuel tanks57．Before doing maintenance on electrical equipment, you should ______.A. turn off power firstB. turn on power firstC. with a test pen in handD. tell C/E 58．When start a screw pump, the by pass valve should be ______.A. closedB. opened fullyC. cracked openD. partly open59．Our company has built a new ship in Hamburg and I am going to fly there to______.A. hand it overB. take it overC. carry it overD. carry it out60．Routine monitoring of a diesel engine should include ______.A. checking for leaksB. checking temperatures and pressuresC. listening for abnormal noisesD. all of the above.61．Which of the precautions listed should be observed when taking on diesel fuel?A. Secure all lighting to the main deck.B. Provide a portable fan to blow away fumes.C. Prohibit smoking in the area.D. Display a black triangle during daylight hours.62．The conventions under which the port state control inspection is carried out include all the following except______.A. SOLAS 74B. MARPOL 73/78C. STCW 78/95D. ISM Code63．A portable foam fire extinguisher is placed in operation by ______.A. turning it upside downB. pressing the foam leverC. squeezing the grip handleD. opening the hose valve 64．In cleaning up an oil spill, the use of chemical agents would ______.A. absorb the oil for easy removalB. remove the oil from the waterC. disperse or dissolve the oil in the waterD. not affect the oil65．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?A. Make an entry in the official logbook.B. Open the master control valves on the fixed CO 2 system.C. Start the fire pump and check discharge pressure.D. Secure auxiliary condenser overboard discharge.66．One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is ______.A.the … snow ‟ whic h is sometimes discharged along with the gas is toxicB. prolonged exposure to high concentrations of CO 2 gas causes suffocationC. rapid dissipation of the CO 2 vaporD. the CO 2 gas is lighter than air and a large amount is required to extinguish a fire near the deck 67．The company should establish procedures to ensure that the ship is maintained______ the provisions of the relevant rules and regulations.A. out of accordance withB. in relation toC. in conformity withD. in connection with 68．The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than ______ by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage ______before their watch.A. 0.08%/ 4 hoursB. 0.08%/ 2 hoursC. 0.04%/ 4 hoursD. 0.04%/ 2 hours二、关联题（每组关联题题干下有4个小题，每小题4个选项）第一组：Because the exhaust gas driven turbo-blower cannot provide enough air at low engine speeds, the pressurized air should be cooled to increase the charge air density. As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engine. So a water separator should be mounted beneath the bottom part of the engine inlet manifold.Lubricating oil from the compressor will pass along the air lines and deposit on them, in the event of a cylinder air starting valve leaking, hot gases would pass into the air pipes and ignite the lubricating oil. If starting air were supplied to the engine, this would further feed the fire andcould lead to an explosion in the pipelines. In order to prevent such an occurrence, cylinder-starting valves should be properly maintained and the pipelines regularly drained. Also oildischarged from compressors should be kept to a minimum, by careful maintenance.69.A water separator is used in order to ______.A. keep the air from being carried into the engineB. keep the moisture from being condensedC. keep the danger from being carried into the engineD. take away the condensate from the air70.Why should we use a charge air cooler?A. In order to increase the charge air temperature.B. In order to increase the charge air pressure.C. In order to reduce moisture condensed.D. In order to increase the charge air density.71.Which of the following may cause an explosion according to the passage?A. Starting air cannot be supplied into the engine.B. Air starting valve leaks and starting air is supplied into the engine.C. Cylinder-starting valves are properly maintained.D. Oil discharged from compressors is kept to a minimum.72.In order to avoid igniting the lubricating oil and leading to an explosion in the pipelines, ______.A. pipelines should be regularly drainedB. cylinder-starting valves should be properly maintainedC. oil discharged from compressors should be kept to a minimumD. A+B+C第二组：Maintenance and OverhaulingSatisfactory and proper operation of the engine depends not only on correct manoeuvring but also on how well it is kept in order. Regular maintenance of the engine helps a lot in preventing early wear of parts and in ensuring a long service as well as the working efficiency of the engine.With various types of engines, of course, the maintenance and overhaul is different. Instruction books are to be referred to whenever necessary.The individual parts of the engine should be inspected and thoroughly cleaned at regular intervals. The periods for such overhaul work depend largely on the quality of the lubricating oil and fuel, on the load and on the efficiency of the operator in locating troubles and remedyingthem in time..During overhaul the safety rules have to be observed as required in order to prevent the danger of accidents. Special precaution is necessary when the engine is running with the lagging removed. During overhauls with the engine shut down, safety measures should be taken to avoid undesirable turning of the crankshaft. All pipes should be pressure-relieved before the repair work is started. Read the pressure gauges and /or check the pipes by carefully loosening the screw plugs or connections.If some parts of the running gear are dismantled, before using the turning gear, make sure that no loose parts are jammed in the crankcase where it is easy for them to cause damage.73.According to the passage, which the following factors are involved to keep the enginesatisfactory and proper running?A. correct manoeuvringB. keep the engine in orderC. refer to the instruction booksD. all of above74.According to the passage, which the following items do influence the periods of the overhaulingwork?A. the quality of the lubricating oilB. the load of the engineC. the efficiency of the operator in locating troubles and remedying them in timeD. all of the above75.According to the passage, we should take special precaution when ____.A. the engine is running with the removal of laggingB. the engine is shut downC. pipes are removedD. the screw plugs or connections are lossened76.According to the passage, line 17 the bold and italic word “it” may propabably mean ____ .A. running gearB. turning gearC. crankcaseD. to cause damage中华人民共和国海事局2003年第3期海船船员适任证书全国统考试题(总第32期)科目：轮机英语试卷代号：803适用对象：无限、近洋航区3000KW及以上船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。

轮机英语8套（6）

轮机英语8套（6）1、T eam members share accurate understanding of current and predicted engine-room and associated systems state, and of .A. external environmentB.external resourcesC.internal environmentD.internal resources2、Which of the equipment listed is most effective in processing bilge slops for overboard discharge? (172917:第2 章船舶辅助机械:748) 查看备注查看答案A. A 100PPM oily water separator. B. the second engineerC. the third engineerD. the fourth engineer6、Under ISPS Code, the ship to which it applies has to carry _. (174865:第5 章国际公约、规则:235) 查看备注查看答案A. an International Ship Security CertificateB. an International O i l Pollution Prevention CertificateC. a Safety Management CertificateD. an International Ballast Water Management Certificate7、In order to protect the aerobic bacteria from death, the sewage plant should workB. Assembling the lube oil purifier as a separator and aligning it to the bilge overboard. .C. A 15PPM oily water separatorD. A magnetic duplex strainer3、During the PSC inspection, under the provisions of SOLAS74, which one may not be regarded as clear grounds for ships detainment? (174599:第4 章船舶轮机管理业务:621) 查看备注查看答案A. Excess amount of oily-water mixtures in bilgesB. Insulation of piping including exhaust pipes in engine room contaminated by oilC. Improper operation of bilge pumping arrangementsD. Paint peeling off the uptake4、A gearbox is used in a ship driven by a medium-speed diesel engineA.to govern the engine speedB.to increase the engine speedC.to reduce the engine speedD.to fix the propeller shaft5、Usually _ handles the majority of the correspondence and negotiation needed during transactions of stores and spare parts in the engine department. (174448:第4 章船舶轮机管理业务:470) 查看备注查看答案A. the chief engineer A.at 3-month intervalsB.at 14-day intervalsC.at 7-day intervalsD.continuously8、After charging solid waste, close the dump chute, and ignite it with the _.A.auxiliary and waste oil burnersB.auxiliary burner or the waste oil burnerC.auxiliary burnerD.waste oil burner9、The separating effect of oil separator is not very good, the reason may be _ 。

三管轮考试48期轮机英语试卷及答案

三管轮考试48期轮机英语试卷及答案轮机英语第45期1.These acid residues must be prevented from entering the crankcase otherwise the lube oilwould be _______A. contaminated B .emulsified C deteriorated D .oxidated2. The ratio of the brake horsepower to the indicated horsepower of a diesel engine is its_______A. thermal efficiencyB. mechanical efficiencyC. brake thermal efficiencyD. volumetric efficiency3. The cetane number of a diesel fuel oil medicates its _________A. viscosityB. acid contentC. heating value4. The greatest turbulence in a diesel engine cylinder is created by the ________A. shape of the combustion chamberB. fuel injection spray patternC. cylinder swept volumeD. degree of penetration of the fuel oil droplets5. The projection on a shaft designed to change circular motion into up and down or back andfore motion is called ______A. wheelB. crankshaftC. running gear6. A clearly visible benefit of RT-flex engines is their ________operation at all ship speeds.Thisis achieved by the superior combustion performance.A. shocklessB. smokelessC. no vibration D noiseless7. A main bearing consists of two shells which are secured by means of studs and______A. tie rodsB. through boltsC. lead wiresD. bearing caps8. Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantageof _________A. less even torqueB. higher cylinder head temperaturesC. fewer power strokes per revolutionD. greater weight/size requirements9. ________controls the fuel oil temperature in order to provide oil at the correct viscosity forcombustionA. The viscosity regulatorB. The temperature controllerC. The flow meterD. The pressure switch10. A lubricant often has to perform many duties in any situation,in addition to its fundamentaljob of __________A. resisting oxidizationB. reducing frictionC. promoting moving speedD. developing inertia11. Shaker, circulation, and spray are the three general methods used in _______A. pre-injection fuel oil treatmentB. lube oil filtrationC. lube oil purificationD. piston cooling12. Which of the diesel engine components listed increases air density and helps to improveengine operating efficiency?A. ImpellerB. Air bottleC. Air cooler D Exhaust diffuser13. Each cylinder has one starting valve which is usually opened by air pressure and closed by__________.A. nuts and boltsB. new jointsC. spring forceD. sealing rings14. Which of the listed governor characteristics will greatly affect the load sharing relationshipbetween paralleled diesel generators?A. SensitivityB. PowerC. Speed droopD. Compensation15. A pyrometer is an instrument commonly used to measure_______.A. cylinder pressureB. flame intensityC. exhaust gas temperatureD. crankshaft axial alignment16. After starting a diesel engine, which of the listed operating conditions should be checked first?A. Air box pressureB. Lube oil pressureC. Exhaust temperaturesD. Raw water pressure17. A high temperature alarm or ______ which will melt is used to guard against the explosion ofcompressor air pipelines.A. a flame trapB. a relief valveC. a fusible plugD. a bursting cap18. Great care is dedicated to the removal of ______from the scavenge air.A. gravityB. viscosityC. densityD. humidity19. Lubrication for the main reduction gears used with dieselengines is usually supplied by ____A. oil from the main engine sumpB. an independent lube oil systemC. the stern bearing head tankD. the stern bearing sump tank20. The maximum pressure developed by a waste heat boiler is determined by the main engineexhaust ______.A. gas compositionB. gas temperatureC. pressureD. timing21. The _____ is fitted in pair one is the main valve the other the auxiliary or standby.A. main steam stopB. auxiliary steam stop valveC. feed check or control valveD. blow down valve22. Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, couldresult in _______.A. increased fuel consumptionB. increased feed-water consumptionC. fuel pump failureD. combustion control system failure23. Burner ignition failure in an automatically fired auxiliary boiler would be caused by _____A. a burned out solenoid in the oil supply valveB. high temperature excess airC. incorrectly setting the hot-well dump valveD. an incorrectly positioned burner snubber (缓冲器) relay24. Waterside scale in a fire-tube boiler may cause ______.A. increased heat transferB. fireside erosionC. high steam demandD. overheated tubes25. Throttling in the ________ line of a centrifugal pump involves the risk of the pump cavitationA. suctionB. exhaustC. pressureD. discharge26. Centrifugal pimp can be designed with a number of impellers _____ to attain a high finaldelivery pressure.A. at two ends of the same shaftB. opposite each otherC. parallelD. in series27. Before disconnecting a joint in a pipeline, you should _______.A. determine the size of the gasketB. hang a bucket under the jointC. have a first aid kit on handD. be sure no pressure exists in the line28. To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the _____A. pump must always be primedB. volute must impart a radial and rotary motion of the waterC. suction side connection must guide the liquid to the lantern ringsD. stuffing box should not be allowed any water leakage29. Which of the listed conditions can lead to cavitation in a centrifugal pump?A. Vapor pockets formed in the suction flow streamB. Rough casing volute surfacesC. Worn wearing ringsD. Heavy fluid in the flow stream30. Refrigerant entering the compressor of a refrigeration system should be in which of thefollowing conditions?A. Sub-cooled liquidB. Sub-cooled vaporC. Superheated vaporD. Liquid31. ______ is the circulation and refreshing of the air in a space without neccssarily a change oftemperature.A. RefrigerationB. Air conditioningC. VentilationD. Heating32. In a chilled water air conditioning unit using a reciprocating compressor, the refrigeratingeffect the primary refrigerant can be increased by _____.A. increasing refrigerant pressure in the coilB. increasing chilled water flow through the coolerC. sub-cooling the refrigerant in the condenserD. superheating the refrigerant in the compressor33. If a plastic film insulation becomes damaged in air conditioning system,______ may formwithin the film.A. evaporationB. condensationC. liquefiesD. vaporization34. The resistance to the movement of the globule in oily water mixture depends on its size andthe _________ of the fluid.A. pressureB. velocityC. gravityD. viscosity35. Because the flow rate of supply water pump is too large, oily water separator does not workwell. Which of the following is not the reason.?A. the monitoring equipment is out of orde rB. separating effect becomes badC. separating effect becomes bad and inner wall is contaminatedD. inner wall is contaminated36. Which of the following would not be burnt in an incinerator on board.A. waste oilB. waste clothesC. oil ragsD. plastic garbage37. Concerning the incinerator’s operating, which of the followingis not correct?A. scavenging time should be more than 30 seconds before ignitingB. the oil temp erature of waste oil tank is 80~100℃C. first igniting the incinerator with diesel oil, when the temperature of hearth is about 600℃D. the ash from incinerator can be dumped into sea no distance limitation38. _____ are used to digest the sewage to produce innocuous sludge in a biological sewagetreatment plant.A. anaerobic bacteriaB. aerobic bacteriaC. air bubblesD. disinfection chemicals39. A centrifuge arranged to separate two liquids is known as ______.A. an oily water separatorB. a purifierC. a centrifugal compressorD. a clarifier40. A centrifugal fuel oil purifier should be shut down if ______.A. more sealing water is neededB. the over clamp needs tighteningC. the purifier has a bad vibration when startedD. water is discharged from overflow line41.If the bowl of a disk type centrifugal purifier when operated asa separator is not primed, the_____A. oil has a tendency to emulsify in the bowlB. purifier will act as a clarifier at the discharge ringC. oil will be lost through the water discharge portsD. oil solids will be deposited only at the intermediate top disk42. In a two-stage flash-type evaporator, excess brine in the first stage automatically passes_____.A. directly to the second stage feed heaterB. directly overboard through the brine coolerC. into the second stage flash chamberD. into the second stage vapor condenser43. In which of the areas listed would you expect to find the highest salt concentration in a flash evaporator?A. Distiller air ejector cooling mediumB. Saltwater heater dischargeC. First-stage internal feed boxD. Second-stage internal feed box44. Hydraulic control check valve can be used to ____ in the marine hydraulic mechanism.A. control the back pressure of return oilB. lock the oil lines under some conditionsC. permit oil flow with reversed directionD. Second-stage internal feed box45. The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the _______.A. slide blockB. tilting boxC. pintleD. reaction ring46. The crane is usually mounted on a pedestal to offer adequate ________ to the operator.A. timeB. spaceC. lengthD. visibility47. Which problems can occur if the brake band lining of a wildcat brake becomes excessively worn?A. The driving engine will over-speed.B. The anchor will immediately dropC. The clutch will overheatD. The brake’s effectiveness will be reduced48. _______ with various arrangements of barrels are the usual mooring equipment used on board ships.A. CranesB. WinchesC. CapstansD. Windlass49. Overheating of a hydraulic system may be a result of _______.A. changing pump discharge pressure in response to normal load variationsB. a high oil levelC. incorrect fluid viscosityD. continued slow re-circulation of the oil50. In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid as this will cause _______.A. molecular fluid vibrationB. energy lossesC .wide pressure variations D. mechanical damage to control valves51. One factor that determines the frequency of an alternator is the ________.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage52. What will be the phase angle relationship of a six-pole, three-phase, rotating field generator?A. 60B. 120C. 180D. 36053. To parallel an incoming machine to a running machine therefore it is necessary to ensure firstly that ________.A. two frequencies must be brought into phaseB. the incoming machine accepts a small amount of loadC. the running machine must be unloadD. both voltages are equal54. The frequency of an alternator is controlled from the main switchboard by adjusting the _______.A. frequency meterB. voltage regulatorC. governor controlD. sychroscope switch55. ______ is provided to alternators, in the event of prime mover failure to ensure that the alternator does not act as a motor.A. Reverse current protectionB. Reverse power protectionC. Synchronising deviceD. Frequency meter56. _______ is used to control, modulate, monitor and protect generator set.A. Control panelB. Load panelC. Paralleling panelD. Busbar57. Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?A. The generator and bus transfer sectionB. The 450 volt, 60 cycle, 3 phase busC. The 120 volt, 3 phase, 60 cycle busD. The 24 volt DC bus58. The ground terminal of a starter should be connected to ________.A. the common ground pointB. the starter’s frameC. the communicatorD. the starter’s mounting bolt s59. Which of the electrical properties listed will always be the same for each component in a parallel circuit?A. ImpedanceB. CurrentC. ResistanceD. Voltage60. In a series circuit, which value will remain unchanged at all places in the circuit?A. V oltageB. CurrentC. ResistanceD. Inductance61. In an alternating current electrical system, a low system power factor is a direct sign of _____A. wasted energyB. efficient operationC. a short in the exciter field windingsD. an excessive number of minor system grounds62. Accidental grounds in a shipboard electrical system must be repaired as soon as possible as they will ________.A. result in immediate power outagesB. damage circuit breakersC. appear on the ground detection systemD. damage insulation and may cause outage63. If the main engine starting consecutively failed _______ times, the cause should be found and the trouble eliminated before next starting.A. 2B. 3C. 4D. 564. The normal color of the exhaust gas of the diesel should be _______.A. achromatism or thin grayB. thin whiteC. sky-blue D black65. After finished with engine, which of the following cannot be shut off by the duty engineer?A. fuel valveB. the main starting valveC. the sea chestD. the main sea water pump inlet valve66. Before the seas get rough, it is a good safety practice to _______.A. secure loose gearB. move quickly about the shipC. increase lightingD. shutdown auxiliary equipment67. A class “C” fire would occur in ________.A. beddingB. pipe insulationC. paintD. a generator68. The most likely place for a fire to start through the process of spontaneous combustion is in _________.A. an electrical switchboardB. the pressure tanksC. the fuel oil tanksD. the oily rag bin69. Which of the fire extinguishers listed is to be weighed annually and sent ashor e for recharging if the weight loss exceeds 10‰of the weight of a full charge?A. FoamB. Soda acidC. Dry chemicalD. Carbon dioxide70. Which of the following components provides a direct source of seawater for the fire main system?A. Rose boxB. Sea chestC. Sluice valveD. Fire pump stuffing box71. When administering artificial respiration, it is of the utmost importance to ________.A. use the mouth-to-mouth methodB. clear airwaysC. use rhythmic pressure methodD. check the injured person’s heartbeat72. Obviously, for a given fuel oil, its pour point is _______ its cloud point.A. lower thanB. higher thanC. as same asD. better than73. ____, where the ship is docked for hull coating renewal, and for any other required underwater work to be carried out, when the opportunity is taken to make other repairs.A. V oyage repairsB. Routine dockingC. Damage repairsD. conversion74. When the dock is refilled with water after docking repair, the first work which should be done by engineer department is ________.A. igniting auxiliary boilerB. releasing air in sea water systemC. starting generatorD. cut off shore power75. The correct tightening is obtained by the use of ______ to measure the extension given to the bolts.A. pressure gaugesB. thermometersC. stretch gaugesD. bridge gauges76. In the Oil Record Book, a comprehensive list of operational items are grouped into operational sections Each section is codified by a/an ________A. numberB. abbreviationC. letterD. number, abbreviation and letterA. an International Ship Security CertificateB. an International Oil Pollution Prevention CertificateC. a Safety Management CertificateD. an International Ballast Water Management Certificate78. Which one is not the “clear grounds” for a more detailed inspection?A. the master and the chief engineer are unable to communicate effectivelyB. serious corrosion on the hullC. damaged sanitary pumpD. one page missing in the oil record book79. “Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a ________A. substandard shipB. standard shipC. over-standard shipD. reference ship80. STCW 78/95 Convention shall apply to seafarers _____ on board seagoing ship entitled to fly the flag of a Party.A. servedB. servingC. surveyedD. surveying81. The officer in charge of the engineering _______ the watch to the relieving officer if there is reason to believe that the latter is obviously not capable of carrying out the watch-keeping duties effectively.A. shall take overB. shall not take overC. shall band overD. shall not hand over82. When the order given by bridge may have bad results, the duty engineer should_____A. inform the captain for a further considerationB. inform the captain, and not perform itC. stop the M/E immediately, and then inform the chief engineerD. stop the M/E immediately, and then inform the captain83. The scuppers should be plugged _____.A. only if fixed containment is not usedB. only if portable containment is not usedC. only if fixed containment drains are openD. whenever the vessel is being bunkered84. If it becomes necessary to pump bilges while a vessel is in port, which of the following procedures should be followed?A. Pump only if the discharge is led to a shore tank or bargeB. Pump only during the hours of darknessC. Pump only on the outgoing tideD. Pump only as much as is necessary85. The SOLAS convention prescribes that in the fire fighting drill the duty engineer should start the fire pump and supply deck water in _______ minute(s)A. 5B. 3C. 2D. 186. According to the ISM CODE, the “person”in the phrase “to designate a person or persons ashore having direct access to the highest lev el of management” refers to ________.A. the manager of the shipping companyB. the master of the shipC. the designated person on board shopD. the designated person ashore87. In order to strengthen maritime security and prevent and suppress acts of terrorism against shipping, a new, comprehensive security regime for international shipping was set to enter into force in July 2004. The new regime is ________.A. ISM CodeB. ISPS CodeC. FSS CodeD. IBCC Code88. In the voyage, when carrying out abandon ship drill, ________ should be test every time.A. the emergency lighting system for muster and abandon shipB. air/oil emergency shut-downC. M.E. emergency operationD. main/auxiliary steering gear changing二．关联题（关联题干下有4个小题，每小题4个选项）第一组Scavenge port inspection provides useful information about the condition of cylinders, pistons, and rings, at low expense. The inspection consists of visually examining the piston, the rings and the lower part of the cylinder liner, directly through the scavenge air ports To reduce the risk of scavenge box fire, remove any oil sludge and carbon deposits in the scavenge air box and receiver in connection with the inspection.The port inspection should be carried out at the first stop after a long voyage, e.g. by anchoring if possible, to obtain the most reliable result with regard to the effectiveness and sufficiency of the cylinder lubrication and the combustion cycle (complete or incomplete)A misleading result may be obtained if the port inspection is carried out after arrival at harbor, since manoeuvring to the quay and low-load running, e.g. river or canal passage, requires increased cylinder oil dosage, i.e. the cylinders are excessively lubricated, Further, during low load, the combustion ccle might not be as effective and complete as expected, due to the actual fuel oil qualities and service (running) condition of the fuel injection equipment. It is highly recommended to take this information into consideration.89. The components of an engine involved in normal scavenge port inspection comprise _______.①the piston ②piston rings ③the lower part of the cylinder liner④the fuel injectorA.①②B. ①②③④C. ②③D. ①②③90. If the scavenge box had too much oil sludge and carbon deposits, what would occur?A. excessive cylinder oil consumptionB. the scavenge box fireC. the crankcase explosionD. excessive wear of the cylinder liner91. In order to obtain the most reliable result with regard to the effectiveness and sufficiency of the cylinder lubrication and the combustion cycle, when should the scavenge port inspection be carried out?A. at the first stop after a long voyage, e.g. by anchoring if possibleB. at the first stop after arrival at harborC. at the first stop after low load runningD. at the first stop after passing river or canal passage92. Under what condition that the scavenge pot inspection can gain a misleading result?①after passed through Panama Canal ②after got alongside shanghai quay ③after arrival shanghai roadstead (外锚地)A. ②③B. ①②C. ①②③ D ①第二组Current regulations with respect to the discharge of oily water set limits of concentration 15 parts per million. A monitor is required to measure these values and provide both continuous records and an alarm where the permitted level is exceeded.The principle used is that of ultra-violet fluorescence. This is the emission of light by a molecule that has absorbed light. During the short interval between absorption and emission, energy is lost and light of a longer wavelength is emitted. Oil fluoresces more readily than water and this provides the means for its detection.A sample is drawn off from the overboard discharge and passes through a sample cell. An ultra-violet light is directed at the sample and the fluorescence is monitored by a photoelectric cell Where an excessive level of contamination is detected an alarm is sounded and diverting valves are operated. The discharging liquid is then passed to a slop tank.93. The passage is mainly about ________.A. oily water separatorB. current regulations related to oil pollutionC. oil in water monitorD. the principle of ultra-violet fluorescence94. A monitor can obtain all of the following functions except _______.A. measuring oil content valuesB. providing continuous recordsC. lowering the oil content below 15 ppmD. providing an alarm unit warning of levels of discharge in excess of 15 ppm95. From the passage, we can learn that the ultra-violet fluorescence is a kind of________A. oil sampleB. lightC. photoelectric cellD. alarm unit96. A sample is drawn off from ______ and passes through a sample cellA. bilge waterB. discharge of oil separatorC. slop tankD. discharge of oily water separator。

轮机长用最新轮机英语4647试题库

编号问题选择A 选择B 选择C 选择D 答案注解1 "On a large diesel engine installation, crankshaft axial alignment is maintained by the ________." piston rod guides engine thrust bearing crosshead bearing main shaft flexible coupling B 在大型柴油机安装中，曲轴靠推力轴承保持轴向对中。

2 "A diesel engine which is rated for normal operation at a crankshaft speed of 800 rpm, is commonly classed as a ________." slow-speed diesel medium-speed diesel high-speed diesel constant-speed diesel B 曲轴转速800转／分以额定功率正常运行的柴油机称为中速柴油机。

3 Which of the following statements is correct concerning available astern power for diesel main propulsion systems? Astern power is to be provided in a sufficient amount to secure proper control of the ship in all normal circumstances. The astern power of the main propelling machinery is to provide for continuous operation astern at 60% of the ahead rpm at rated speed. "For main propulsion systems without reversing gears, controllable pitch propellers or electric propulsion drive, running astern is not to lead to overload conditions." "Astern power available will be equal to ahead power when controllable pitch propellers are utilized, thus discounting the need for increased operating parameters." A 倒车功率必须能提供足够的功率确保在各种正常情况下能够对船舶进行适当的控制。

轮机英语试题及答案

轮机英语试题及答案一、选择题（每题1分，共10分）1. What is the term for the main engine of a ship?A. PropellerB. RudderC. EngineD. Boiler2. Which of the following is not a type of marine fuel?A. DieselB. BunkerC. GasolineD. Heavy Fuel Oil3. What does the abbreviation "SOLAS" stand for?A. Society of Legal and Administrative StudiesB. Safety of Life at SeaC. Special Operations and Logistics AssistanceD. Ship Operating and Lifesaving Systems4. What is the purpose of a ship's anchor?A. To propel the shipB. To steer the shipC. To secure the ship when not in motionD. To lift heavy objects5. The term "deadweight tonnage" refers to:A. The weight of the ship's hullB. The maximum weight a ship can carryC. The weight of the ship's cargoD. The weight of the ship's fuel6. What is the function of a ship's bilge?A. To store fresh waterB. To collect and pump out water from the hullC. To provide buoyancyD. To store oil7. Which of the following is a navigational instrument?A. CompassB. Engine roomC. LifeboatD. Anchor8. What is the term for the lowest part of a ship's hull?A. DeckB. HullC. KeelD. Stern9. What does "GM" stand for in ship stability calculations?A. Gross MassB. Gross TonnageC. Gantry MastD. Metacentric Height10. The International Maritime Organization is abbreviated as:A. IMOB. ITUC. ISOD. ILO二、填空题（每题1分，共5分）11. The main components of a ship's propulsion system include the ______, propulsion shaft, and propeller.12. The ______ is the person responsible for the operation and maintenance of the ship's engine.13. The term "freeboard" refers to the distance between the waterline and the ______ of the ship.14. A ship's ______ is the area where the crew lives and works.15. The ______ is a document that provides information about the ship's safety equipment and procedures.三、简答题（每题5分，共20分）16. Explain the difference between a cargo ship and a tanker.17. Describe the role of the International Maritime Organization (IMO) in maritime safety.18. What are the main factors considered when designing a ship's hull?19. Discuss the importance of regular maintenance of a ship's engine.四、论述题（每题15分，共30分）20. Discuss the environmental impact of maritime transportation and how it can be mitigated.21. Analyze the challenges faced by a ship's crew during a long voyage and how they can be addressed.五、翻译题（每题5分，共10分）22. Translate the following sentence into English: “船舶的稳性是指船舶在受到外力作用时，能够保持平衡的能力。

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中华人民共和国海事局2009第1期海船船员适任统考试题(总第47期)科目：轮机英语试卷代号：805适用对象：无限/近洋航区3000KW及以上船舶二/三管轮（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑。

第1题至88题，每题1分，第89题至96题，每题1.5分。

一．单项选择题1. The _______ engine is used for alternators and sometimes for main propulsion with a gearboxto provide a propeller of between 90 to 120 rpm.A. four-strokeB. two-strokeC. slow speedD. reversible2. The abbreviation “MIP” stands for ________.A. middle indicating pressureB. mean indicated pressureC. mean indicated pitchD. middle indicated power3. The cetane number of a diesel fuel oil indicates is ________.A. viscosityB. acid contentC. heating valueD. ignition quality4. In a two-stroke engine the camshaft rotates at ________ the engine rotational speed.A. halfB. twiceC. the same speed asD. four times5. A diesel engine is similar to a gasoline engine except that the former has no _________.A. cross-headB. cylinderC. connecting rodD. spark plug6. It is easier to replace a dry cylinder liner than a wet one because __________.A. of the thin wall thicknessB. honing makes it easier to maintain the desired oil filmC. water seals are not requiredD. it fits more loosely due to a decrease in heat transfer through the composite wall7. A main bearing consists of two shells which are secured by means of studs and _________.A. tie rodsB. through boltsC. lead wiresD. bearing caps8. However fast or slow the combustion rate, it is still a ________ between carbon, hydrogen, sulphur and oxygen that releases heat.A. physical deformationB. state exchangeC. chemical reactionD. coalescence9. During the fuel injection period, fuel pressure must exceed cylinder gas pressure to ________.A. ensure penetration and distribution of the fuel in the combustion chamberB. ensure the needle valve is flushed clean during each injectionC. prevent combustion gas blowback into the open needle valveD. prevent reflected pressure waves when the needle valve closes10. In a diesel engine lube oil system, which of the following parts should be lubricated first?A. Camshaft bearingsB. Main bearingsC. Piston crownsD. Cylinder walls11. In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the ________.A. suction pressure regulatorB. thermostatic bypass valveC. sea water temperatureD. water level in the expansion tank12. Which of the diesel engine components listed increases air density and helps to improveengine operating efficiency?A. ImpellerB. Air bottleC. Air coolerD. Exhaust diffuser13. A large two-stroke direct reversing diesel engine is to be reversed. Prior to the admission of starting air you must _______.A. line up the engine for restarting with light diesel oilB. reposition the fuel injection camC. change the intake and exhaust valve cam positionsD. place the starting cam in the intermediate position14. Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generation?A. SensitivityB. PowerC. Speed droopD. Compensation15. Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the _________.A. cooling water leaving each cylinderB. fuel oil entering the injectorC. exhaust gases at various locationsD. lube oil at the bearing supplies16. After starting a diesel engine, which of the listed operating conditions should be checked first?A. Air box pressureB. Lube oil pressureC. Exhaust temperatureD. Raw water pressure17. To shut down a diesel engine after it exceeds the set maximum speed, which type of device listed should be used?A. Speed limiting governorB. Over-speed governorC. Over-speed tripD. Over-speed relay18. The treatment of the fuel oils involves storage, heating, filtering and ________.A. centrifugingB. pressurizingC. atomizationD. igniting19. A propeller, in order to operate efficiently, must rotate at a relatively ________ speed.A. highB. lowC. fastD. lowly20. Latent heat changes the ________ of water.A. physical stateB. temperatureC. atmospheric pressureD. sensible pressure21. The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent ________.A. accidental dry firing and overpressureB. uncontrolled fires in the furnaceC. explosion in the boiler furnaceD. overheating of the pressure parts22. Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler could result in _______.A. increased fuel consumptionB. increased feed-water consumptionC. explosions in the boiler furnaceD. overheating of the pressure parts23. Burner ignition failure in an automatically fired auxiliary boiler would be caused by________.A. a burned out solenoid in the oil supply valveB. high temperature excess airC. incorrectly setting the hot-well dump valveD. an incorrectly positioned burner snubber (缓冲器) relay24. If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause may be ________.A. high steam pressure in the boilerB. abnormally high feed-water temperatureC. abnormally high boiler water temperatureD. steam demand exceeding feed pump capacity25. Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid ________ pressure.A. depending onB. in relative toC. regardless ofD. because of26. A spur gear pump should be operated with the discharge valves ________.A. slightly openedB. throttledC. fully openedD. halfway opened27. An independent bilge suction is required for _________.A. ballast tanksB. sludge tanksC. machinery space bilgesD. cargo hold bilges28. To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the _____.A. pump must always be primedB. volute must impart a radial and rotary motion of the waterC. suction side connection must guide the liquid to the lantern ringsD. stuffing box should not be allowed any water leakage29. An inadequate reciprocating bilge pump discharge is most often caused by _______.A. defective safety valvesB. clogged suction strainersC. scarred cylinder wallsD. clogged drain valves30. In a compression refrigerant plant, the hot, high pressure refrigerant gas is cooled by the seawater and becomes liquid in the _________.A. compressorB. condenserC. throttle valveD. evaporator31. The ________ only allows for adjustment of temperature in each room by the occupantmanually controlling the air volume admitted.A. central air conditioning systemB. high velocity systemC. low velocityD. single duct system32. The opening of the humidifier‟s valve of air-conditioner should be ________, when thecircumstance temperature is raised to above 5~8°C in the winter.A. decreasedB. increasedC. fixedD. closed33. Under normal conditions, the quantity of air circulation becomes less and less. What is thereason?A. dirty delivery ductsB. too much refrigerantC. the fouling filtersD. high temperature outside34. When bilge water is heated in a holding tank, which one of the following statements is notaccurate?A. The relative high temperature facilitates primary gravity separation.B. Most of the oil and organic solvents are raised to the top layer.C. The relative high the temperature is, the more the top oil will be collected.D. The normal high temperature has little use on the separation of emulsified oil.35. If separating effect of the oily water separator is not good, we can improve it by _________.A. flushing separator with cold waterB. increasing bilge water supply flowC. heat oily water properlyD. opening manual oil discharge valve36. Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler37. When does auxiliary burner of rotary nozzle type incinerator put into use? I. when igniting II.the waste oil for dealing with is too much III. before stopping incineratorA. I +IIB. I+IIIC. II+IIID. I+II+III38. When anaerobic bacteria convert the sewage to an inert sludge, _________.A. no oxygen is neededB. oxygen is necessaryC. oxygen is given offD. no gas is produced39. For a L.O. purifier, if the back pressure of the oil outlet is too high, the interface between oiland water in the bowl will ________.A. be interruptedB. move downwardsC. move outwardsD. retain original position40. When separating the lube oil without additive, it is usually working with hot water, the aim isto remove _______ from it.A. acidB. oil sludgeC. mechanical impurityD. salinity41. If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the________.A. oil has a tendency to emulsify in the bowlB. purifier will act as a clarifier at the discharge ringC. oil will lost through the water discharge portsD. oil solids will be deposited only at the intermediate top disk42. Tube leaks in the distillate cooler of a two stage flash evaporator will result in __________.A. loss of second stage vacuumB. contamination of the distillateC. lower feed inlet temperatureD. contamination of the second stage condenser43. Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator,are removed by the __________.A. spray pipesB. demistersC. condensersD. splash baffles44. Overflow valve is usually used to __________.A. control the fluid flow through itB. prevent the pressure before overflow valve over the specified valueC. make the pressure after overflow valve steadyD. control the direction of oil flow45. Among the basic categories of equipment, which of the following are used to convertmechanical into hydraulic energy?A. the hydraulic pumpsB. valvesC. hydraulic46. Cargo handling unit is rated according to the _______ to be lifted.A. cargo craneB. jibC. safe working loadD. oil pressure47. The part of the anchor windlass that engages the anchor chain for lifting is called the_______.A. warping headB. fairleadC. wildcatD. capstan48. In automatic ________, the winch may be overhauled and wire is paid off the barrel at apre-determined maximum tension.A. cranesB. windlassC. capstansD. mooring winches49. The major source of chemical contaminants in hydraulic fluid is _________.A. microscopic steel shavingsB. abrasive wasteC. anti-oxidant compoundsD. oxidation by-products50. Before doing any work on a hydraulic system equipped with accumulators, you should_______.A. drain the accumulators and purge with oxygenB. bleed off all stored energy from the accumulators completelyC. charge the accumulators to prevent system energy lossD. pump the hydraulic fluid into the accumulators to prevent fluid loss51. One factor that determines the frequency of an alternator is the ________.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnetic usedD. output voltage52. The frequency output of an operating alternator is controlled by the ________.A. relative speed of the rotor polesB. number of turns of wire in the armature coilC. strength of the magnetic usedD. output voltage53. Prior to closing the breaker when paralleling two AC generators, the recommendedpractice is to have the frequency of the incoming machine __________.A. slightly less than the line frequencyB. the same as the line frequencyC. slightly greater than the line frequencyD. have nothing to do with the line frequency54. If two A.C. generators are to be operated in parallel, the load is distributed evenly by_______.A. means of rheostatB. a balance coilC. adjusting the governor settingsD. changing excitation55. The first requirement for logical troubleshooting of any system is the ability to _________.A. collect all available data on a casualtyB. recognize normal operationB. identify the probable cause of a symptom D. isolate the faulty component56. _________ is (are) not power supplied by main switchboard directly.A. Steering gear and windlassB. Navigation light and radio power panelC. Navigation device power boxD. Daily fresh water pump57. The emergency generator or emergency battery is connected to __________ on most largeships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards58. __________ connectors hold best if a wire is accidentally pulled or a connection becomesloose.A. Ring typeB. Fork typeC. Spade typeD. …Push on, push off‟ type59. The primary function of an electric motor is to _________.A. develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance60. Fuses placed in series with a thermal trip-type circuit breaker are used for _________.A. time-delay protectionB. short-circuit protectionC. short duration surge protectionD. sustained overload protection61. Shore power must be _________ during dock repair.A. disconnectedB. switched offC. cut offD. connected62. The operator of electrical motors should keep a constant check on the loads they carry because________.A. low loads necessitate frequent insulation cleaningB. exceeding nameplate values shortens useful lifeC. energy is wasted if full loading is not utilizedD. power factor correction methods are load dependent63. Before a marine diesel engine is started the cylinders and pistons must be ________.A. cooled to appropriate temperatureB. warmed up gradually to appropriate temperatureC. opened up and renewedD. ground and polished64. _______ is a precaution which contributes to avoiding trouble under normal operatingconditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed65. During ship maneuvering, when the diesel is stopped, which of the following items is wrong?A. keep all systems running normallyB. main engine is available at any momentC. shut off the starting air bottle outlet valveD. pay attention to the changes of the system parameters66. A tank which has been scaled for a long period of time can be dangerous because _______.A. steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous effect is essential to extinguish the fire is ________.68. Fires in escaping flammable gas are quickly brought under control by _________.A. stopping the flow of gasB. reducing the chemical chain reactionC. increasing the oxygen supplyD. cooling below the autoignition point69. Which of the following statements is true concerning carbon dioxide when used as a fireextinguishing agent?A. Carbon dioxide is corrosive when exposed to fireB. Carbon dioxide should be applied slowly to a large engine room fire.C. Its total cooling effect is far greater than water.D. Its smothering effect is excellent for class B fires.70. While on watch in the engine room, you hear a continuous sounding of the general alarm.Which of the following actions should you take?A. Make an entry in the official logbook.B. Open the master control valves on the fixed CO2 systemC. Start the fire pump and check discharge pressure.D. Secure auxiliary condenser overboard discharge.71. To determine that a compartment contains sufficient oxygen to sustain life, you should usea/an _______.A. explosimeterB. oxygen indicatorC. fresh air indicatorD. emergency escape breathing device72. If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should ________.A. close the static leg filling valveB. close the overflow tank filling valveC. reduce the fuel oil pumping rateD. stop the fuel oil pumping operation73. The ________ tool is used in precision work to smooth or enlarge a slightly undersized hole.A. round outB. round fileC. reamerD. hole driller74. During the dock repair, each sea valve must be disassembled, cleaned and ground well, the sealing surface between the valve and the valve seat should be checked and ratified by________ before reassembled.A. chief engineerB. surveyorC. the engineerD. the technique personnel of the shipyard75. The additional mark ________ in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.A. BRCB. MCCC. AUT-0D. AUT-176. The Oil Record Book, as a part of the ship‟s official logbook, shall be kept on board and preserved for a period of _________.A. 3 years after making the first entryB. 2 years after the last entryC.3 months after last entryD. 3 years after the last entry77. The valid period of the International Oil Pollution Prevention Certificate on board isn‟t more than _______.A. one yearB. two yearsC. four yearsD. five years78. During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships‟ detainment?A. failure of the proper operation of emergency generatorB. insulation of piping including exhaust pipes in engine room contaminated by oilC. improper operation of bilge pumping arrangementsD. damaged sanitary pump79. “Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a________.A. substandard shipB. standard shipC. over-standard shipD. reference ship80. STCW 78/95 Convention shall apply to seafarers _________ on board seagoing ships entitledto fly the flag of a Party.A. servedB. servingC. surveyedD. surveying81. All engineer officers and engine room ratings shall be aware of the serious effects of operationor accidental pollution of the marine environment and shall take all possible _________ to prevent such pollution, particularly within the framework of relevant international and port regulations.A. stepsB. proceduresC. precautionsD. programs82. When the order given by bridge may have bad results, the duty engineer should _________.A. inform the captain for a further considerationB. inform the captain, and not perform itC. stop the M/E immediately, and then inform the chief engineerD. stop the M/E immediately, and then inform the captain83. If an oil spill occurs on deck, you should _______.A. cover the area with foamB. cover the area immediately with absorbent materialC. wash down immediately with a fire hoseD. wash down immediately with an oil dispersant solvent84. According to the international regulations concerning the prevention of pollution of sea areasfrom ships, the disposal into the sea of all plastics is ________.A. welcomeB. admitted in some special areasC. prohibitedD. acceptable85. The main objective of the SOLAS Convention is _________.A. to provide a solution of lowering pollution at seaB. to specify minimum standards for the members composing the watch at seaC. to specify minimum standards for ships considering their safetyD. to tell the company how to go about running their business.86. Which of the following about ISM Code is not right?A. It aims to ensure safety at sea.B. It aims to avoid damage to the environment.C. It aims to prevent human injury or loss of life.D. It aims to provide a method to run a company.87. The ship security assessment is an essential and integral part of the process of developing andupdating ________.A. the ship security planB. the company security planC. the port security planD. the national security plan88. In order to limit the introduction of alien species by ship, _________ was adopted on 13 Feb,2004 at the IMO.A. Revised Marpol annex IB. Revised Marpol annex IIC. International convention for the control and management of ships‟ballast water andsedimentsD. ISPS Code二．关联题（关联题干下有4个小题，每小题4个选项）第一组：Starting Air SystemThe engine is started with compressed air of max 30 bar. Minimum pressure required is 15 bar. A pressure transmitter PT301 mounted on the starting air line before the main starting valve has an indicator in the instrument panel. The supply line from the starting air bottles is provided with a non-return valve and a drain valve.The solenoid valve is electrical (remote control) or manual (on the engine) operated and send after activation a pilot air signal to the main starting air valve. Interruption of the control air doses the main starting air valve. After the main starting air valve is activated the air flows through the flame arresters to the starting air valves in the cylinder heads. Part of the air flows via the starting air distributor to each of the starting air valves in the cylinder heads. The starting air distributor controls the timing of opening and closing of the starting air valves. On the moment the main starting air valve is operated also the governor booster is energized. The main starting air line is provided of a safety valve. Interlock valve is a safety device to avoid an engine start with engaged turning gear.89. As the engine is started with compressed air, the correct sequence of the following devicesbeing activated is _________. 1. solenoid valve 2. starting air valve 3. starting air distributor 4. main starting air valve 5. governor boosterA. 1,5,4,2,3B. 1,4,5,3,2C. 1,4,3,2,5D. 4,3,1,2,590. The underline sentence “the governor booster is energized” probably means _________.A. the governor booster is supplied with electric powerB. hydraulic oil is pumped into the governor boosterC. the governor starts to work before starting the engineD. the governor booster is supplied with pressurized air before starting the engine91. Which of the following components are attached to the air bottles?A. a pressure transmitter PT301B. a non-return valve and a drain valveC. a solenoid valveD. a starting air distributor92. When the engine is engaged with turning gear, ________ can keep the engine from starting.A. the control airB. the solenoid valveC. the main starting air valveD. the interlock valve第二组：（1）The company should establish procedures to ensure that the ship is maintained in conformity with the provisions of the relevant rules and regulations and with any additional requirements which may be established by the Company.(2) In meeting these requirements the Company should ensure that:(2.1) inspections are held at appropriate intervals;(2.2) any non-conformity is reported, with its possible cause, if known;(2.3) appropriate corrective action is taken; and(2.4) records of these activities are maintained.(3) The Company should establish procedures in its safety management system to identify equipment and technical systems the sudden operational failure of which may result in hazardous situations. The safety management system should provide for specific measures aimed at promoting the reliability of arrangements and equipment or technical systems that are not in continuous use.93. This passage concerns _________.A. the inspections of the ship and equipmentB. the reports of non-conformitiesC. the corrective actionsD. the maintenance of the ship and equipment94. In (2.4) of this passage, …these activities‟ refer to the following activities except _________.A. the establishment of any additional requirementB. the corrective action takenC. the inspection heldD. the reporting of any non-conformity95. According to this passage, some particular equipment should have specific measures topromote its reliability, because __________.A. it is not in continuous useB. its sudden failure may result in hazardous situationsC. its stand-by arrangements may not be regularly testedD. it may not be identified by the Company‟s safety management system96. This passage is probably taken from _________.A. the MARPOL ConventionB. STCW ConventionC. the ISPS CodeD. the ISM Code期数：47 试卷代号：805。