轮机英语42期考试
轮机大管轮英语真题48期
中华人民共和国海事局2009年第5期海船船员适任证书全国统考试题(总第48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82题，每题1分，第83题至94题，每题1.5分。
一、单项选择题：1. The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is .A. they operate between 150 and 450 rpmB. they are connected to the propeller by gearingC. their smaller size and weightD. they can be connected directly to the propeller without gearing2. The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by .A. large conical springsB. compressed air pressureC. hydraulic pressureD. exhaust gas pressure3. One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the .A. governor sensitivityB. exhaust temperatureC. fuel injection pressureD. speed of the cam shaft4. The desirable properties or a marine fuel oil should inc lude .A. high flash point and high viscosityB. low flash point and high viscosityC. low heating value and high sulphur contentD. high heating value and low sulphur content5. As the plunger moves upwards in the barrel, injection will commence once the plunger basthe spill ports and the pressure builds up.A. opened upB. closed offC. lined upD. taken off6. In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces.A. all of the oil used by the engine through a filterB. some of the oil used by the engine through a filterC. some of the oil used by the engine through a centrifugeD. all of the oil used by the engine through a centrifuge7. Because the circulating water is in a closed loop, is installed to cater for expansion and contraction of the water at different conditions of operation.A. an expansion jointB. a drain tankC. a head tankD. a contraction tank8. The high air velocity leaving the compressor of an exhaust gas turbocharger is converted to pressure in the .A. inlet nozzle ringB. turbine wheel bladeC. diffuser passagesD. inlet volute9. 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 distributor10. Diesel engines driving alternators operating in parallel must maintain a set frequency regardless of load changes. The governor characteristic used to accomplish this is known as .A. actuationB. sensitivityC. compensationD. promptness11. By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a .A. tachometerB. pyrometerC. dynamometerD. calorimeter12. When the ship is going to enter into the harbor, ____.A. change from heavy fuel oil to diesel oil for main engineB. pumping out bilge waterC. change sea chest from high level one to lower level oneD. test emergency generator13. If the jacket water temperature rises rapidly above normal in a diesel engine, you should first .A. place standby cooler in operationB. reduce engine toadC. check thermostatic valveD. clean sea water strainer14. Air cocks, usually positioned at the in a circulating system, is used to get rid of the air in the system.A. bending jointB. expansion tankC. weldD. the highest point15. Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?A. Leaking seal ringB. Insufficient heat transfer from the exhaust valvesC. Blocked cooling water passages to the headD. Excessive scavenging air provided to the engine16. of an engine crankshaft can be detected by measuring deflections of' crank webs for each unitof the engine.A. MisalignmentB. LengthC. StrengthD. Stresses17. can be a direct cause of faulty operation of diesel engine fuel injection nozzles.A. Excessive fuel nozzle holder coolingB. Sediment in the fuel supplyC. Distortion of the fuel spray patternD. Improper atomization of the fuel18. When fuel is injected late into a diesel engine cylinder .A. the exhaust will be clearB. fuel consumption will be lowC. all the fuel will be burned at top dead centerD. fuel consumption will be high19. A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result m the need to adjust the .A. pilot valve openingB. compensating needle valveC. compensating spring tensionD. accumulator spring tension20. Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?A. Baffle plates that have been bent during prior removal.B. Leaks m the cooler tube nest.C. Operating the engine while maintaining a high sea water outlet temperature.D. A punctured sea water strainer supplying cooling water to the heat exchanger.21. If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to the engine.A. stopB. startC. speed upD. slow down22. In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A. Noise coming from that air starting valve.B. Continuous operation of the starting air compressor.C. Zero air pressure in the air starting system.D. Overheated starting air pipe to the cylinder head.23. Engine operating conditions may be indicated by the color of the exhaust smoke. Black smoke could indicate .A. an insufficient speed droop settingB. an overloaded engineC. clogged drain holes in the oil control ringsD. complete combustion24. In reducing engine speed to an efficient 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 increased25. Which of the following statements represents an advantage of an electromagnetic clutch?A. Large misalignments can be tolerated between the shaft and engine couplingB. Slip is held to a minimum when reversing shaft rotationC. Engine torsional vibrations to the driven shaft are eliminatedD. It aids in maintaining power factor26. _____ of the controllable pitch propeller enables the blades to be moved to change the pitch angle.A. An external mechanismB. An internal mechanismC. An interlock deviceD. A hunting gear system27. When sailing ill cold zones, should be drained of water.A. the ventilation pipeB. the water line for fire fighting on the deckC. the fuel oil lineD. the water supplying line in bath room28. If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measures the engineer on duty should .A. stop main engine immediatelyB. ask the captain and the chief engineer's permission for stopping the engineC. inquire the bridge for the situation initiativelyD. stop engine and inform bridge29. Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with .A. excessive speedB. improper warm-upC. extreme misalignmentD. inadequate lubrication30. Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?A. RadiationB. ConductionC. Natural convectionD. contact directly31. To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the .A. suction service valve as a vaporB. suction service valve as a liquidC. discharge service valve as a vaporD. charging valve as a liquid32. If the superheat value of a thermostatic expansion valve is set too low, the _.A. the suction line will be abnormally cold and liquid may slug back to the compressorB. the suction line will be hot due to a reduced amount of refrigerant returning to the compressorC. the temperature of the refrigerant within the condenser will remain the sameD. the temperature of the refrigerant passing through the sub-cooler will decrease 33. Sweating of the refrigeration system compressor crankcase is caused by .A. too much superheatB. insufficient superheatC. suction pressure too lowD. excessive refrigerant returning to the compressor34. If a refrigeration compressor is short cycling on high head pressure, you should .A. purge the condenser if the waterside is dirtyB. check for proper water flow through the condenserC. increase the high pressure cutout settingD. reduce the cooling water flow35. Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?A. A shortage of liquid refrigerant.B. Excessive frost on the evaporator.C. Excessive condenser cooling water.D. Insufficient condenser cooling water flow.36. For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the .A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface37. can cause oil flow from water outlet of the oil purifier.A. Oil inlet valve opening too quicklyB. Oil temperature little higher than normalC. Diameter of gravity disc too smallD. Viscosity of oil little lower than normal38. Check valve isn't used to control .A. direction of oil flowB. back pressure of return oilC. bypass of filterD. high pressure overflow39. 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 motors40. With reference to a two-ram actuating mechanism, which one of the following statement is FALSE?A. The rams work inside cylinders.B. The cylinders have glands sealing their open ends.C. The rams are connected to a cross-head.D. The cross-head is mounted on the rudder stock.41. If a heavy sea strikes the rudder, the shock is transmitted through ___ to the rams, this cause a sudden increase in oil pressure in one of the cylinders.A. the control rodB. the hunting gearC. the floating ringD. the tiller arm42. The viscosity of' an oil is a measure of its .A. weightB. internal frictionC. demulsibilityD.S.A.E. number43. One function provided by a hydraulic accumulator is to ___.A. provide an area where air can separate from the oilB. provide an area to separate solid contaminants from the oilC. act as an oil and water separatorD. absorb shocks occurring in the system44. Which of the following components are used to convert alternating current produced in the generator windings to direct current?A. Armature and equalizerB. Commutator and brushesC. Rotor and interpolesD. Field and exciter45. The frequency of an alternator at a given r/min is determined by the .A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage46. The operation of two alternators requires the voltages to be equal and also in phase.A. parallelingB. series-mountingC. runningD. controlling47. The power factor of an AC generator operating singularly is determined by the .A. connected loadB. prime mover speedC. field excitationD. generator's rated voltage48. When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates .A. good insulationB. bad insulationC. high insulation power factorD. a high slot discharge factor49. For the power is supplied by main switchboard directly not through sub-board.A. saving network costB. improving the reliability of supplying power to important loadC. preventing sequence reversingD. increasing the power Factor of important load50. The emergency generator or emergency battery is connected to on most large ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards51. Which of the following definitions can be used to define the term 'offset' as a characteristic of controller action?A. The period of time in which the set point and the control point coincide.B. The periodic change between the set point and the control point.C. The variable difference between the set point and the control point.D. The constant difference between the set point and the control point.52. A manometer is used to measure .A. pressureB. temperatureC. volumeD. specific gravity53. Which of the listed devices may be used as a digital device?A. variable resistorB. diodeC. strain gaugeD. thermistor54. UMS are mainly unattended overnight and during this time should have control of the main engine.A. the chief engineerB. the engineer on cabin watchC. the bridge officer on watchD. the master55. Before starting the engine, the air bottle should be ____.A. pumped upB. loadedC. dischargedD. closed56. During UMS rounds, a duty engineer notices that the fuel oil overflow observation glass is full of oil. Should he .A. Stop all F.O. transfers immediately, and inform the chief engineer.B. Make a sounding of the F.O. overflow tank and decide if there is enough capacity to leave ituntil the following morning.C. Call a motorman and have him sound the F.O. overflow tank periodically during the night.D. start the F.O. purifier57. When received the order "Finished With Engine", which of the following operations is wrong?A. stop the L.O pump, S.W pump, jacket water cooling pump immediatelyB. stop the F.O booster pumpC. engage the turning gear, turn the main engineD. open the main engine scavenge air trunk's drain cocks58. Which of the following is NOT a recommended safe practice?A. Securing equipment against slipping or drifting.B. Operating machinery at its recommended speed.C. Repairing loose handles on tools before using.D. Using tools for purposes for which they are not designed.59. A fire involving aluminum powder would be a class .A. 'A' fireB. 'B' fireC. 'C' fireD. 'D' fire60. The three basic components of a fire are chain reaction, heat, fuel, and ___.A. carbon monoxideB. oxygenC. carbon dioxideD. any gaseous substance61. Why is it necessary to warn engine room personnel before activating the fixed CO2 system?A. To make them aware there is a fire.B. To let them know they should leave the engine room.C. To prevent possible injury from frostbite.D. To make them aware that ventilation will automatically stop.62. While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take first?A. Secure the burners then proceed to your assigned boat station.B. Start the fire pump and establish flow to the fire main.C. Open the guardian valve and standby to maneuver.D. Open the master control valves on the fixed CO2 system.63. Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an .A. Orsat apparatusB. flame safety lampC. Halide torchD. combustible gas indicator64. Which of the following statements is correct regarding an oil with a high viscosity index?A. A large change of viscosity occurs with a minor change in temperature.B. No change in viscosity occurs with any change in temperature.C. Very little change in viscosity occurs with a significant change in temperature.D. The viscosity of the oil increases with an increase in temperature.65. The purpose of treating the cooling water of the diesel engine is to . I. resist the scale formation in the cooling chamber II. lubricate the engine part III. increase thermal capacity IV. resist corrosionA. I +IIB. II + IIIC. III + IVD. I +IV66. After receiving the stores, you should sign on the _____.A. engine logbookB. delivery docketC. store listD. maintenance book67. , where a ship is refitted for a different use.A. Voyage repairsB. Routine dockingC. Damage repairsD. Conversion68. During the dock repair, when installing the tail shaft and propeller, should be on the spot for supervising.A. chief engineerB. engineerC. captainD. any member of the engine department69. does not belong to the mooring trial item.A. Generator sets running testB. Shafting intensity testC. The function test for pumps that serving for M.E.D. M.E. safety devices test70. 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 watched by duty personnel.A. BRCB. MCCC. AUT-0D. AUT-171. The core item in the Oil Record Book Part I is , and its main content is .A. Item A, BALLAST OR CLEANING OF FUEL OIL TANKSB. Item B, DISCHARGE OF DIRTY BALLAST OR CLEANING WATER FROM FUEL OILTANKS REFERRED TO UNDER SECTION(A)C. Item C, DISPOSAL OF OIL RESIDUES(SLUDGE)D. Item H, BUNKERING OF FUEL OIL72. During the PSC inspection, under the provisions of SOLAS 74, which one be regarded as clear grounds for ships' detainment?A. failure of proper operation of propulsionB. paint peeling off the uptakeC. no operation procedures for file oil separatorsD. damaged sanitary pump73. The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the .A. Navigation Log BookB. Engine Room Log BookC. Oil Record BookD. Muster List74. When deciding the composition of the engineering watch, which may include appropriately, many factors shall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief' engineer75. When the machinery spaces are in the periodic unmanned condition, shall be immediately available and on call to attend the machinery space.A. the chief engineerB. the designated engineer from shipyardC. the designated duty officer in charge of the engineering watchD. the designated surveyor from classification society76. When anchoring in unsheltered anchorage, chief engineer should consult with captain .A. if the ship must be stand byB. if take bunkeringC. if keep-watching as in voyageD. if the ship must anchor two anchors77. 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 bunkered78. Which statement regarding garbage disposal is correct?A. Records for ground garbage disposal are not required when disposal into the sea occurs morethan 25 miles offshore.B. Discharging or transfer of garbage while in port to a shore facility must be recorded.C. Maintaining records for the incineration of garbage aboard ship is not required.D. The recording of garbage disposal should include the approximate weight.79. The alarm signal for engine room catching fire is a blast of random bell followed by .A. two knocksB. three BlocksC. four knocksD. five knocks80. According to the ISM CODE, the "person" in the phrase 'to designate a person or persons ashore having direct access to the highest level of management' refers to __A. the manager of the shipping companyB. the master of the shipC. the designated person on board shipD. the designated person ashore81. The ship security officer shall have knowledge and have received training, taking into account the guidance given in Part B of .A. the ISM CodeB. the ISPS CodeC. the IBC CodeD. the IGC Code82. 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 and sedimentsD. ISPS Code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： The Wartsila 50DF operates on the lean-bum principle: the mixture of air and gas in the cylinder has more air than is needed for complete combustion. Lean combustion reduces peak temperatures and therefore NOx emissions. Efficiency is increased and higher output is reached while avoiding knocking. Combustion of the lean air-fuel mixture is initiated by injecting a small amount of LFO (pilot fuel) into the cylinder. The pilot fuel is ignited in a conventional diesel process, providing a high-energy ignition source for the main engine. To obtain the best efficiency and lowest emissions, every cylinder is individually controlled to ensure operation at the correct air-fuel ratio and with the correct amount and timing of pilot fuel rejection. Wartsila has developed a special electronic control system to cope with the demanding task of controlling the combustion in each cylinder, and to ensure optimal performance in terms of efficiency and emissions under all conditions by keeping each cylinder within the operating window. Stable and well-controlled combustion also contributes to less mechanical and thermal load on the engine components. Current stringent emission regulations demand the reduction of NOx emissions. In an internal combustion engine this means controlling peak temperature and residence time, which are the main parameters governing NOx formations. In the Wartsila 50DF engine, the air-fuel ratio is very high (typically 2.2). Since the same specific heat quantity released by combustion is used to heat up a larger mass of air, the maximum temperature and consequently NOx formation are lower. The mixture is uniform throughout the cylinder since the fuel and air are premixed before introduction into the cylinders, which helps to avoid local NOx formation points within the cylinder. Benefiting from this unique feature, NOx emissions from the Wartsila50DF are extremely and comply with the most stringent existing legislation.83. What is the combustion feature of the Wartsila 50DF?A. Lean air in the cylinderB. Excessive fuel in the cylinderC. Excessive air in the cylinderD. Spark ignition84. For the Wartsila 50DF, the complete combustion compared with the lean-combustion can decrease the following results .①Exhaust temperatures ②NOx emissions ③Propeller efficiency ④Output⑤Cylinder knocking ⑥Fuel supplyA.①②B. ③⑥C. ④D.④⑤85. Which system should be supplied to obtain the best efficiency and lowest emissions?A. Lean combustion principleB. Fuel oil systemC. Electrical control systemD. Electronic control system86. What is the most advantage of the lean-combustion different from the routine combustion?A. Continue runningB. Well combustionC. Higher peak temperatureD. Lower holding time of Maximum temperature第二组：Magnetic pickup (MPU) sensors are devices which can be used in conjunction with electronic control modules for monitoring of parameters such as speed, direction of rotation and a variety of alarm conditions. MPU sensors are available in various sizes and types. Following are some guidelines for their selection on industrial engines. MPUs are located near a flywheel, camshaft or other type of gear with rotation relative to engine speed. The passing of the gear teeth through the MPU tip (pole) generates a voltage and frequency. This frequency is converted to a speed reference by a control module. It should be noted here that most MPUs will develop similar signals. However, the magnitude and strength of the signal is dependent on the size of the sensor in relation to the gear teeth, the clearance between the pole piece and the gear teeth, and various other factors. As a general rule of thumb, the following standards should be met:①Dimension of tooth top surface should be equal to or more than the pole piece diameter.②Tooth height should be equal to, or more than the space between teeth.③The space between teeth should be approximately three times the pole piece diameter.④Air gap (clearance) between tooth and pole piece should be between 0.015" to 0.030". MPUs normally have 3/8", 5/8" threads and 2", 3" and 4" lengths. Determining which size is appropriate depends on the space available for installation, the availability of pre-drilled holes and consideration to those rules mentioned above. In most cases, these will be the only factors affecting the selcetion of a MPU.87. MPUs can be used to .①sense speed ②supply alarm ③sense direction of rotation.A.①②B. ②③C. ①③D. ①②③88. Which of the following factors will affect the strength and magnitude of the signal?A. The number of the gear tooth.B. The clearance between the pole pieces.C. The size of the sensor.D. The MPUs thread.89. According to the passage, we can infer that the pole piece diameter must be tooth height.A. as same asB. much less thanC. much more thanD. not confirmed90. Which of the following factors will affect the selection of a MPU? ①the pole piece length ②the availability of pre-drilled holes ③the space available for installation.A. ①②B. ②③C. ①③D. ①②③第三组：Following a security incident, in which the response measures outlined in the Ship Security Plan (SSP) have been activated, there will be a thorough review of their effectiveness and details will be made available, on request, to persons duly authorized by the Ship's Flag State Administration. The Ship Security Plan is not subject to detailed inspection (other than confirming its existence on the ship) by duly authorized officials of a port State unless there are "clear grounds" to believe that the ship is not in compliance with the requirements of SOLAS or the ISPS Code, and the only means to verify or rectify the non-compliance is to review the relevant sections of the Plan. In such cases, access to the Restricted parts of the Plan relating to the non-compliance is exceptionally allowed, but only with the consent of the Flag State, or the master. If the master, in his professional judgment, believes that such "clear grounds" exist, and allowing access to relevant sections of the Restricted part of the Plan might resolve the situation, such access can be exceptionally granted. However, this should be immediately reported by the ship to the Company Security Officer (CSO). If access to the Restricted part of the Plan is denied by the master, this should be immediately reported by the ship to the Company Security Officer for guidance and reference to the Flag State.The Confidential part of a SSP cannot be subject to non-flag State inspection unless otherwise agreed by the contracting governments concerned. Any such request or demand by port state officialsto view sections of the Confidential part of the Plan will be immediately reported by the ship to the Company Security Officer for guidance and reference to the flag State before any details are revealed to non-flag State officials. The Confidential provisions, which from an integral part of this Plan, are held by the Ship Security Officer (SSO)91. After a security incident, the revision of the SSP will made by .A. the CSOB. the SSOC. persons duly authorized by the Ship's Flag State AdministrationD. information not given92. Which statement is True?A. The Port State Control Officer has no right to check a SSPB. The Master has the right to refuse the request from a Port State Control Officer to check theconfidential part of the SSP on boardC. The Confidential part of a SSP can never be subject to non-flag StateD. Even the flag State has no right to check the SSP thoroughly93. The Restricted parts of a SSP are kept on board byA. the CSOB. the SSOC. the Flag StateD. the master94. After the SSP being checked by a duly authorized officials of a port State, whom should be reported to by the ship immediately?A. Port StateB. Flag stateC. The CSOD. The Administration。
11-12学年第二学期期末考试A卷
青岛海运职业学校2011-2012学年第二学期期末考试试卷（A卷）考试科目：轮机英语考试班级：轮机1104考试时间：90分钟考试方式：闭卷满分：100分共 5 页班级学号姓名（答题说明：请把答案写在附后的答题纸上）一、单项选择题(每题1分)1. The rotating range of the low speed diesel engine is usually lower than_____.A. 100 rpmB. 200 rpmC. 300 rpmD. 500 rpm2. Some cranes are mounted in pairs on a common platform which can be rotated through _____ .A. 360°B. 270°C. 180°D. 90°3.“Stand by an engine”means _____.A．“prepare to stop the engine”B．“assemble an engine on its bedplate”C．“make an engine ready for starting” .D．“dismantle an engine”4. 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 space5. Each completed page of the Oil Record Book must be signed by the _____A. engineer on watchB. Chief EngineerC. Chief MateD. Master6. _____ shall be provided to every oil tanker of 150 tons gross tonnage and above to record relevant machinery space and cargo/ballast operations.A. Oil Record Book Part IB. Oil Record Book Part IIC. Oil Record Book Part I or Part IID. Oil Record Book Part I and Part II7. Which of the following operations need NOT to be entered on the Oil Record Book Part I？① Disposal of oil residues. ② Internal transfer of fuel oilA. ① onlyB. ② onlyC. both ① and ②D. neither ① nor ②8. The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in _____ of operation are immediately implemented.A. ahead or asternB. fore or aftC. up or downD. speed or direction9. 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 entry10.After "F.W.E." is given, the air system is shut down, the_____ gear put in, all drains and indicator cocks opened, and the cooling water kept running.A. steeringB. timingC. turningD. running11. Before "stand-by" is rung on the engine telegraph, it is usual to give the main engine__ ahead and astern.A. a brief trial with turning gearB. a brief trial on powerC. a long trial by steering gearD. one minute's trial with windlass12. The crankshaft should be turned by means of _____ to see that all parts move freely.A. a steering gearB. a chain gearC. a turning gearD. a sever motor13. The cylinder and piston must be warmed up _____ to a temperature of about 140 deg. F in standing by engine.A. repeatedlyB. quicklyC. graduallyD. immediately14. The order" _____ "means "Maximum maneuvering engine revolution for ahead propulsion."A. Full AheadB. Half AheadC. Full AsternD. Half Astern15. "Movement of engine no longer required." means" _____ ".A. Stop EngineB. No Engine RevolutionsC. Stand-by EngineD. Finished With Engine16. _____ is the removal of exhaust gases by blowing in fresh air.A. Gas exchangeB. ChargingC. ScavengingD. Supercharging17. _____ scavenging means both exhaust ports and scavenging ports are arranged to the same side.A. UniflowB. CrossC. LoopD. Straight18. A diesel engine is similar to a gasoline engine except that the former has no_____.A. cross-headB. cylinderC. connecting rodD. spark plug19. At least_____ cylinders in a two-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.A. 6B. 12C. 4D. 820.At least_____ cylinders in four-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.A. 6B. 2C. 12D. 821. Charging is the filling of the engine cylinder with a supply of_____ for compression.A. waterB. fresh airC. fuel oilD. gas22. During the suction stroke, the piston is moving_____.A. inwardsB. outwardsC. downwardsD. upwards23. During working, when the piston is near the_____, the air ignites the fine spray of fuel.A. TDCB. DTCC. BDCD. BCD24. For an ordinary four-stroke diesel engine the exhaust valves close_____.A. after TDCB. before TDCC. after BDCD. before BDC25. For an ordinary four-stroke engine the exhaust valves open_____.A. after TDCB. before TDCC. after BDCD. before BDC26. For an ordinary four-stroke engine the inlet valves open_____.A. after TDCB. before TDCC. after BDCD. before BDC27. _____ the supercharge pressure is, _____ power an engine develops.A. The higher/the moreB. Higher/moreC. Higher/ littleD. The higher/the less28. Four strokes consist of suction, compression, _____ and exhaust stroke.A. combustionB. condensationC. chargingD. evaporation29. In a four-stroke engines the camshaft rotates at_____.A. half the engine rotational speedB. twice the engine rotational speedC. the engine rotational speedD. four times the engine rotational speed30. In a two-stroke engine the camshaft rotates at_____ the engine rotational speed.A. halfB. twiceC. the same speed asD. four times31. In an ordinary diesel engine the fuel injection begins_____.A. after TDCB. before TDCC. after BDCD. before BDC32. In the four-stroke engine, it takes_____ to make one power stroke.A. one propulsionB. two propulsionsC. two revolutionsD. one revolution33. In the part of the cylinder liner inside the scavenging air box there is a series of openings known as__.A. scavenging air portsB. exhaust portsC. fuel valvesD. indicator cocks34. Since the burning or combustion takes place within the engine itself, the engine is known as _____.A. a fire -tube boilerB. an internal combustion engineC. an external combustion engineD. an internal combustion generator35. The abbreviation BDC means_____.A. Boston Diesel CompanyB. base circle diameterC. switch board caseD. bottom dead center36. The abbreviation TDC means_____.A. top dead centerB. temperature difference centerC. time delay dockD. top diesel company37. The burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the_____ which in turn drives the ship's propeller.A. crank-pinB. crankshaftC. crankcaseD. camshaft38. The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a _____.A. air bottleB. compressorC. crank caseD. combustion chamber39. The figure that the volume of air at B. D. C. is divided by the volume of air at T.D.C. is termed as _____.A. ignition ratioB. power ratioC. compression ratioD. injection ratio40. The four strokes are called suction, compression, expansion and exhaust, but only _____ stroke provide the power to drive the ship.A. suctionB. compressionC. expansionD. exhaust41. In the two-stroke engine, inefficient scavenging and other losses reduce _____ to about 1.8.A. the outputB. the oil flowC. the diameterD. the power advantage42. The crane is usually mounted on a pedestal to offer adequate ___ to the operator.A. timeB. spaceC. lengthD. visibility43. Topping wires fix the height of the derricks and ___ to the deck may be used to prevent foreand aft movement.A. staysB. winchesC. barrelsD. brakes44. ____ are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches45. The term “watch” is used in this Regulation to mean ____A. a period of responsibility for an engineer officerB. a group of personnel composing the watchC. either A or BD. neither A nor B46. Where should muster lists be posted?A. In crew s accommodation spacesB. On the navigating bridgeC. in the engine momD. All of the above.47. A fire is considered "under control"when _____A. all hands are at their fire stationsB. all fire-fighting equipment is at the sceneC. the fixed systems are activatedD. the fire is contained and no longer spreading48. A fire in a pile of canvas would be classified as a _____A. class AB. class BC. class CD. class D49. Besides heat, fuel, and oxygen, which of the following is necessary for a fire to exist?A. Chain reactionB. Thermal actionC. Chemical occlusionD. Pyrotechnical reaction50. An oxygen indicator will detect _____.A. concentrations of explosive gasB. the amount of oxygen in a spaceC. the presence of harmful amounts of carbon monoxideD. All of the above51. For which of the listed classes of fire combinations would carbon dioxide be most suitable as the extinguishing agent _____A. Class "A" and class "B"B. Class "B" and class "C"C. Class "A" and class "C"D. Class "C", class "D" , and class "E"52. A fire in a pile of dunnage would be classified as a _____A. class AB. class BC. class CD. class D53. 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 fire.B. 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.54. If ignited, which of the listed materials would be a class "B" fire?A. MagnesiumB. PaperC. WoodD. Diesel Oil 55. The abandon ship signal sounded by the vessels whistle is _____ .A. 6 short blasts and 1 long blastB. long blast more than 6 short blastsC. more than 6 short blasts and 1 long blastD. 1 long blast of at least 10 seconds56. ___ unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker.A. The cable lifterB. hoisting motorC. The topping wireD. The fife-raft57. _____ are used for cargo handling.A. CranesB. Mooring winchesC. WindlassesD. Foreman59.The drive motor will have a brake arranged to fail-safe, i.e. it will _____ the load if power fails or machine is stopped.A. liftB. putC. takeD. hold .60. Hydrocarbon vapors are usually detected by the use of the _____A. flame safety lampB. combustible gas indicatorC. gasometerD. oxygen indicator61. The basic training in fire prevention and fire fighting should include the practical elements which should allow thetrainees to acquire the ability to _____A. use self-contained breathing apparatusB. use various types of portable fire extinguishersC. effect a rescue in a smoke-filled space wearing breathing apparatusD. All of the above62. In a ordinary cargo crane, _____ is fitted to rotate the crane.A. the slewing motorB. the lulling motorC. the hoisting motorD. none of the above63. These include deck machinery such as mooring equipment, cranes and ____A. boilersB. bow thrustersC. stabilizers.D. hatch covers64. In a general cargo crane, three principal movements are ____ ; ____ ; ____.A. hoisting/luffing/slewingB. lifting/raising/loweringC. rotating/raising/handlingD. hosting/lowering/moving65. _____ is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. V arying speed66. Bridge orders must be ___ and a record of any required changes in speed and direction should be kept.A. slowly carried awayB. carried out with a period of delayC. promptly carried outD. paid by the captain67. The requirements of the ISM Code may be applied to _____A. only oil tankersB. only passenger shipsC. only containersD. all ships68. ___means the Government of the State whose flag the ship is entitled to fly.A. AssemblyB. OrganizationC. CompanyD. Administration69. Ship fire-fighting organization includes _____A. general alarm and fire control plansB. muster stations and duties of individualsC. patrol systemD. All of the above70. Administrations should bear in mind the significance of ____ in maintaining safety of life and property at sea and in preventing marine pollution.A. advanced nautical equipmentB. advanced performance main enginesC. emergency equipmentD. communication and language skills71. The objectives of the ISM Code are to ensure _____.A. safety at seaB. prevention of human injury or loss of lifeC. avoidance of damage to the marine environment and to propertyD. All of the above72. A class "B" fire would most likely occur in the _____A. main switchboardB. engine room bilgeC. breathing compartmentD. electric fresh water transfer pump73. Which of the fire extinguishers listed is to be weighed annually and sent ashore for recharging if the weight loss exceeds10% of the weight of a full charge?A. FoamB. Soda acidC. Dry chemicalD. Carbon dioxide74. A class "C" fire would most likely occur in the _____A. engine room bilgesB. main switchboardC. paint lockerD. rag bin75. Which of the following statements is least likely to cause the ignition of fuel vapors?A. Static electricityB. An open running electric motorC. loose wiringD. Explosion proof lights76. A fire and boat drill on a tank vessel shall, by regulation, include _____A. starting the fire pumpsB. checking fireman's outfits and other personnel rescue equipmentC. checking relevant communications equipmentD. All of the above.77. A class "D" fire would be considered as burning _____A. woodB. oilC. electrical equipmentD. magnesium 78. One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is _____A. the "snow" which is sometimes discharged along with the gas is toxicB. prolonged exposure to high concentrations of C02 gas causes suffocationC. rapid dissipation of the CO2 vaporD. the C02 gas is lighter than air and a large amount is required to extinguish a fire near the deck79. An example of class "A" fire is a/an _____A. electrical fire in the engine roomB. oil fire in the engine room bilgesC. oil fire involving a grade "A" petroleum productD. mattress fire in a stateroom80. A combustible gas indicator is used to determine _____A. if there is sufficient oxygen to support lifeB. the toxicity of flammable gases or vaporsC. the amount of C02 present in flue gasD. the presence of flammable gases or vapors in the air81. How long warning must be provided by the CO2 warning alarm before CO2 is discharged into a space ____A. 5 secondsB. 10 secondsC. 15 secondsD. 20 seconds82. The longer an oil fire is permitted to bum, the _____A. harder it is to extinguishB. easier it is to extinguishC. less chance there is of re-ignitionD. easier it is to control83. 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 bin84. Which of the listed extinguishing agents is NOT suitable for fighting a liquid paint fire?A. Dry chemicalB. FoamC. WaterD. Carbon dioxide85. The spreading of fire as a result of heat being carried through a vessel's ventilation system, is an example of heat transfer by _____A. conductionB. convectionC. radiationD. windage86. The purpose of the PSC is _____A. to check and inspect foreign shipsB. to verify the condition of a ship in compliance with the requirements of international conventionsC. to fine shipsD. to detain ships87. What color is used to indicate the last shot of anchor chain?A. RedB. WhiteC. BlueD. Yellow88. A tank has been sealed and unventilated for a long period of time. Which of the following does this indicate?A. The tank is especially dangerous to enter.B. The tank is safe to enter.C. The tank is too dirty to enter.D. Carbon monoxide is present in the tank.二、关联题（关联题题干下有4个小题，每小题4个选项, 每题1.5分）第一组：Out of the many hazards that can occur on ships, fire is by far the most frequent, and results in more total losses than any other casualty. Most fires start through negligence. A number of fatal accommodation fires have been started by people falling asleep smoking in bed; engine room fires have been started by neglected oil leaks dripping on to hot pipes or exhaust manifolds whose insulation has not been replaced after maintenance. Again, thoughtless smoking habits in machinery spaces have been the cause of many severe fires.89. Which of the following hazards most often takes place on board ship?A. FloodB. FireC. Collision and groundingD. Black out90. What is the main cause resuhing in accommodation fires?A. Oil leakageB. Pipe hotC. Exhaust gasD. Smoking in bed91. _____ fires have been started by oil in the hot exhaust manifolds.A. AccommodationB. BedsC. EnginesD. Machinery spaces92. We can infer from this paragraph that the main cause to make ship fires isA. people' s negligenceB. someone smoking in bedC. leaking oilD. exhaust manifolds being replaced第二组：(每题1.5分)Please carefully read the following table and then answer the questions according to the information from this table. Table: types of fire extinguisher93. The most possible combustible materials of class A fire is_____.A. solid materialsB. liquid materialsC. petroleum gasD. electrical equipment94. Which type of fire extinguishers can be used to extinguish all classes of fires?A. SodaB. WaterC. FoamD. Dry powder95. There is one type of fire extinguisher which is injected directly at base of fire making use of gas that can not be used in accommodation. Which one is it?A. WaterB. FoamC. CO2D. Dry powder96. When used to extinguish class B fire, _____ extinguisher should be turned upside down and cover fire smoothly.A. a soda and acidB. a foamC. a CO2D. a dry powder[文档可能无法思考全面，请浏览后下载，另外祝您生活愉快，工作顺利，万事如意!]。
最新-轮机英语关联题题库最新整理篇(带翻译)解析 精品
Passage 1（原题库第1篇）Valve drive mechanismThe valve drive mechanism commands the inlet and exhaust valves at the required timing.第3题The valve drive mechanism consists of an inlet and exhaust cam follower (8) each suspended in a plunger of the tappet assembly (7), two tubular push rods (4) with ball joints, two nodular cast iron rocker arms (2) suspended in a rocker arm bearing bracket, two yokes (5) and a yoke guide pins. See Fig. 4-1.The tappet rollers follow the cam profiles and transfer the movements through push rods to the rocker arms.第4题The rocker arms operate the inlet and exhaust valves through yokes (5).Lubrication for the rocker arms comes from the engine's secondary oil supply manifold throughdrillings in the cylinder head and rocker arm bracket.第2题The tappet assembly receives lubricating oil via channels in the engine block from the main supply manifold. For the roller and shaft, the oil is supplied through the guiding plunger.第4题To compensate for heat expansion a clearance must exist between the rocker arm and yoke.第1题All adjustments have to be done on a cold engine only.1. According to the Passage, the best time to adjust the valve clearance is _____.A. before the engine is startedB. when the engine is runningC. after the engine has just been stoppedD. when something has gone wrong with the engine注：根据文章来看，调节阀间隙的最好时间是在发动机启动之前。
《轮机英语》最新题库注解
《轮机英语》老题库注解陈黄骞编写1. 船舶在加装燃油结束后，在拆卸油管前，一般用压缩空气吹洗残留在软管内的油。
2. "发动机备车"就是使发动机准备起动。
3. 机座是发动机的基础，如无其支撑，发动机的整体，尤其是轴的对中都将无从保证。
4. 飞重通常被用在机械-液压式调速器中感受发动机的速度。
5. 直列式和V型发动机的机架上一般都有道门以提供曲轴和连杆大端轴承的维修通道。
6. 回流扫气中，温度较低的扫气空气和温度较高的废气通过相邻的气口，引起缸套材料的温差问题。
7. 十字头销变椭圆了，需要光车。
8. 联锁装置用来防止在发动机换向完成之前起动空气进入气缸。
9. 燃油和滑油在进入发动机之前，都需要经过处理。
"Both A and B"意"A和B两者都"；"neither A nor B"意"既不是A也不是B"；"either A or B"意"A、B两者之一"。
10. 有时采用滑油来冷却活塞因其漏入曲柄箱不会产生（污染）问题。
11. 通过吹入新鲜空气驱除废气的过程称为扫气。
12. 淡水用来冷却气缸和气缸头，咸（海）水用来冷却润滑油，冷却器中的淡水和空冷器中的增压空气。
13. 造成发动机运行过程中功率下降或失速，首要的可能原因是轴承过热。
14. 发动机曲轴失中可以通过测量臂距差来判断。
15. 发动机A形机架的顶部有一坚固的铸铁框架称为扫气箱。
16. 铝质活塞具有惯性小（重量轻）、热膨胀系数大的特点。
17. 回流扫气式发动机中，扫气口和排气口布置在同一侧。
18. 值班人员不能做任何影响他们对主要机械和相关设备监视职责的工作。
19. 气阀推杆间隙过小会引起排气阀过早打开、过晚关闭。
20. 气阀推杆间隙过大会引起排气阀过晚打开、过早关闭。
21. 气阀推杆间隙过大会引起排气阀过晚打开、过早关闭。
轮机大管轮英语真题45期
中华人民共和国海事局2008年第1期海船船员适任证书全国统考试题(总第45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82题，每题1分，第83题至94题，每题1.5分。
一、单项选择题：1. _____ the engines, the diesel engine is ____ used engine on board.A. Between / more commonlyB. Among / the most commonlyC. Between / not more commonlyD. Among / not the most commonly2. Piston cooling fins are located .A. atop the piston crownB. beneath the piston crownC. at the base of the piston skirtD. inside the cylinder liner cooling water jacket3. Which of the following conditions is realized by the turbo-charging of a previously naturally aspirated diesel engine?A. Ignition lag increases.B. Lube oil system pressure increases.C. Brake specific fuel consumption increases.D. Mechanical efficiency increases.4. Which of the following represents the significance the fuel oil cetane number?A. The cetane number has no affect on injection lag.B. The cetane number is an indication of the fuel's viscosity.C. Ignition lag is reduced with fuels having a high cetane number.D. The cetane number is of little significance in the combustion process.5. Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily byA. heat conduction into the injected fuel oilB. heat conduction into the water jacket wallC. water circulation through passages in the holderD. fuel oil circulation through passages m the holder6. The upper piston rings m large, slow-speed, two-stroke/cycle diesel engines are most effectively lubricated by oil ____.A. fed from mechanical lubricatorsB. thrown off from the main bearingsC. supplied from wick fed drip lubricatorsD. flow from a centrifugal or banjo oiler7. 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 tank8. Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by .A. natural aspirationB. masked intake valvesC. air ceilsD. scavenging air9. Vessels having main engines arranged for air starting are to be provided with at least__.A. one automatic drain serving both containersB. two air starting containers of approximately equal sizeC. one control air container and one starting air containerD. one additional means of starting the main engine 10. When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will .A. pick up more of any increase in loadB. pick up less of any increase in loadC. share an equal amount of any increase in loadD. drop an equal amount of any decrease in load11. Exhaust gas pyrometers are useful for .A. detecting faulty combustion in individual cylindersB. adjusting fuel racks to maintain equal loading between cylindersC. adjusting the load limit setting of the governor at idle conditionsD. calculating engine horsepower12. When the ships is going to enter into the harbor .A. change from heavy fuel oil to diesel oil for main engineB. pumping out bilge waterC. change sea chest form high level one to lower level oneD. test emergency generator13. If the jacket water temperature rises rapidly above normal in a diesel engine, you should first .A. place standby cooler in operationB. reduce engine loadC. check thermostatic valveD. clean sea water strainer14. When using a fuel with a higher than normal sulfur content in an auxiliary four stroke diesel engine, you may .A. maintain higher than normal jacket water temperatureB. change the lube oil more frequently than normalC. maintain a higher air-box temperature than normalD. maintain a higher air-box pressure than normal15. A crack in a cylinder liner can be caused by .A. worn piston ringsB. installation of undersized sealing ringsC. operating the engine at low loadsD. restricted cooling water passages16. In a diesel engine, when refitting piston rings you should .①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring grooveA.①B.②C. ①②D. neither ① nor ②17. Which of the following problems is the main source of fuel pump and injection system malfunctions?A. Improper lubricationB. Air in the fuel systemC. Coated fuel linesD. Excessive vibration18. Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?A. Corrosion and eventual failure of the tank.B. Gumming of the tank relief valves.C. Immediate failure of components downstream of the compressed air system.D. Boiling of the water oil mixture as pressure is reduced.19. A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the .A. pilot valve openingB. compensating needle valveC. compensating spring tensionD. accumulator spring tension20. Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine Because .A. oil foaming will always occurB. large quantities of oil are consumedC. lube oil viscosity is always decreasedD. corrosive by-products are usually formed21. A dry-type spark arrestor removes sparks from a diesel engine exhaust by ____.A. increasing the linear velocity of the exhaust gasesB. changing directions of exhaust gas flowC. decreasing the temperature of the exhaust gasesD. accelerating the exhaust gas through a reduced size orifice22. If the engine does not start on air, it may be due to .A. low compression of the fuel pumpsB. incorrect timing of fuel pumpsC. the starting air valves stuckD. air-locks in fuel oil pipeline23. A sudden power loss from a turbocharged and after-cooled diesel engine is an indication ofa/an .A. turbocharger malfunction or failureB. crankcase exhauster overloadC. overload on the intercoolerD. obstruction in the engine cylinders24. A controllable pitch propeller on a diesel driven vessel eliminates the need for .A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears25. To prevent excessive __ in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possible.A. thermal stressesB. bending momentsC. thermal loadsD. surface tensions26. Compared to a constant pitch propeller, a controllable pitch propeller .A. more efficiently uses available engine powerB. operates at a lower efficiency at a fixed speedC. produces the same torque at lower engine powerD. develops its rated power at a lower speed27. The oil index of main engine should be controlled to prevent it from ____ in heavy weather.A. over heatB. over speedC. over pressureD. over worn28. In the navigation, cause the shafting over load most easily.A. stopping the main engine suddenlyB. changing the main engine running direction suddenlyC. the sailing from the shallow water area to the deep water areaD. the ship's trim too much29. A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of .A. waterB. babbittC. iron or steelD. acids30. The temperature of the refrigerant in the evaporator coil depends mostly upon the ___.A. refrigerant pressure in the evaporatorB. cooling water temperature to the condenserC. heat load in the refrigerator compartmentD. solenoid valve in the liquid line31. Excessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur when the compressor .A. has run continuously for a long periodB. suction pressure is below normalC. oil level is below normalD. starts after a long idle period32. In the presence of an open flame or hot surfaces, chlorinated flourocarbon refrigerants decomposes and form . A. petroleum crystals B. phosgene gas C. water vapor D. carbon monoxide33. Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid line. If excess moisture is present in the system, the indicator will .A. activate the driersB. change colorC. secure the compressorD. add a predetermined amount of liquid drier34. If a refrigeration compressor is short cycling on high head pressure, you should .A. purge the condenser if the waterside is dirtyB. check for proper water flow through the condenserC. increase the high pressure cutout settingD. reduce the cooling water flow35. Low compressor head pressure in a refrigeration system can be caused by ___.A. insufficient condenser cooling waterB. excessive condenser cooling waterC. air in the refrigeration systemD. excessive refrigerant in the system36. To ensure oil purifier working in normal condition, the interval between two sludge discharging should not exceed hours.A. 2B. 4C. 5D. 637. One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is .A. seal water supply be cut offB. make-up water supply be cut offC. oil outlet valve closed or not open sufficientlyD. the flow rate of oil is too much38. 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 cylindersD. hydraulic motors39. Positive displacement, helical gear pumps are well suited for pumping oil because .A. stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB. it is not necessary to closely maintain design clearances with this pumpC. they are essentially self-priming and produce a high suction liftD. these pumps are designed with extreme tooth angles40. The in the steering gear move the rudder to the required angle.A. control equipmentB. power unitC. transmission mechanismsD. fittings and pipeline41. Air trapped in the hydraulic fluid of a steering system may be indicated by .A. the steering pumps overspeedingB. a jammed open relief valveC. a constantly occurring improper rudder responseD. excessive ram pressure42. The ability of lubricating oils to resist viscosity changes during temperature changes is indicatedby the ____.A. American PetroleumB. Institute number viscosity index numberC. Seconds Saybolt Furol numberD. Seconds Saybolt Universal number43. 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 loss44. In a modern three-phase A.C. synchronous brushes generator, the excitation winding is on the rotor. That means .A. The generator need not excitation.B. The winding on the rotor is for inputting excitation current.C. There are three phase windings on the rotor.D. The generator has no brushes.45. The magnetic field is provided by electromagnets so arranged that adjacent poles have ___.A. opposite polarityB. the same polarityC. negative polarityD. positive polarity46. An alternator is being paralleled with one on the line. At the instant the circuit breaker is close, the frequency of the incoming alternator will normally .A. increaseB. not changeC. decreaseD. be exactly 60 hertz47. The division of kilowatt load between two paralleled alternators is determined by the .A. amount of field excitation of the leading machineB. load-speed characteristics of the governorsC. amount of field excitation to the lagging machineD. type of alternator48. Electric insulation is made of organic substances and so gradually with age.A. deterioratesB. increasesC. are fouledD. becomes better49. After a ship enters service it is for the main bus-bar to be made dead.A. usuallyB. commonlyC. exceptionalD. unavoidably50. Usually, emergency electricity supplies to on board.A. Cargo winchB. WindlassC. Steering gearD. Main air compressor51. The control mode in which tile final control element is moved from one of two fixed positions to the other is known as .A. dead band actionB. neutral zone actionC. rangeD. on-off action52. The is used to measure the volume of a liquid or gas through a pipeline within any given period of time.A. flow-meterB. viscometerC. micrometerD. feeler53. The seven segment arrangement for numerical(数字的) display on consoles, test meters and other applications can be either .A. UJT or BJTB. BCD or OCDC. JFET or IGFETD. LED or LCD54. Which of the following is operated from the main engine room console on an automated vessel?A. Fire pump and lube oil pumpB. Lube oil pump and distilling plantC. Distilling plant and shaft alley doorD. Shaft alley door and fixed CO2 release55. Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except .A. open the indicator cocksB. supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C. put the fuel handle in the "stop" positionD. pump up the air bottle56. During the watch keeping at sea, the engineer in charge should notify in the event of any serious occurrence or a situation where he is unsure of the action to take.A. the masterB. the chief engineerC. the bridgeD. the company superintendent57. When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be .A. disengaging the clutch firstly, then stopping the main engineB. stopping the main engine firstly, then disengaging the clutchC. stopping the cooling water pump firstly, then stopping the main engineD. stopping the main engine and disengaging the clutch at the same time58. Which of the listed conditions can be considered as the single greatest cause of accidents?A. SpeedB. Excessive knowledge or skillC. Human errorD. Excitement59. An example of class 'A' fire is a/an .A. electrical fire in the engine roomB. oil fire in the engine room bilgesC. oil fire involving a grade 'A' petroleum productD. mattress fire in a crew's cabin60. Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?A. The mixture is too lean to burn.B. The mixture is too rich to burn.C. The vapor is about to explode.D. Conditions are perfect for combustion.61. One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is .A. the 'snow' which is sometimes discharged along with the gas is toxicB. prolonged exposure to high concentrations of CO2 gas causes suffocationC. rapid dissipation of the CO2 vaporD. the CO2 gas is lighter than air and a large amount is required to extinguish a fire near the deck62. While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should yon take?A. Make an entry in file 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.63. All crew's assigned emergency stations can be found on the ship's .A. muster listB. certificate of inspectionC. clearance papersD. permit to proceed64. As for turbine oil, contact with water in the form of steam will be inevitable so good properties will be essential.A. defrostingB. de-oilingC. demulsifyingD. dehumidifying65. The purpose of treating the cooling water of the diesel engine is to . I. resist the scale formation in the cooling chamber II. lubricate the engine part III. increase thermal capacity IV. resist corrosionA. I+ IIB. II +IIIC. III+IVD. I +IV66. A is the documentary attestation for the delivery of stores and spare parts.A. engine logbookB. delivery docketC. store bookletD. maintenance book67. , 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. Voyage repairsB. Routine dockingC. Damage repairsD. Conversion68. During the dock repair, should be measured firstly before tail shaft drawn out.A. the sinking of tail shaftB. the clearance of stern bearingC. the total flexure of shaftD. main engine crankshaft deflection69. During sea trial, the main engine will be kept run at load.A. 100%B. 110%C. 85%D. different70. The correct tightening is obtained by the use of to measure the extension given to the bolts.A. pressure gaugesB. thermometersC. stretch gaugesD. bridge gauges71. Which of the following operations need NOT to be entered on the Oil Record Book Part I? I. Disposal of oil residues. II. Internal transfer of fuel oilA. I onlyB. II onlyC. both I and IID. neither I nor II72. During the PSC inspection, under the provision of SOLAS74, which one may not be regarded as clear grounds for ships' detainment?A. excess amount of oily-water mixtures in bilgesB. insulation of piping inc luding exhaust pipes in engine room contaminated by oilC. improper operation of bilge pumping arrangementsD. paint peeling off the uptake73. The fire drill must, as far as practicable, be conducted as if .A. there is a minor emergencyB. there is an actual emergencyC. there were a minor emergencyD. there were an actual emergency74. The Convention is the first to establish basic requirements on training, certification and watch-keeping for seafarers on an international level.A. STCW78B. STCW95C. SOLAS74D. SOLAS8875. The officer in charge of the engineering watch shall notify the chief engineer without delay ____.A. in any emergency or if in any doubt as to what decision or measures to takeB. in the event of any impending action in machinery spaces that may cause reduction in ship's speedC. when isolating and bypassing machinery to be worked onD. co-operating with any engineer in charge of maintenance work76. The bridge should inform the engine room before passing through congested or shallow waterway.A. 24 hoursB. 2 hoursC. 1 hourD. 15 minutes77. 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 oil78. 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. acceptable79. International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code) of .A. SOLASB. MARPOLC. STCWD. Ballast Water convention80. According to the ISM CODE, the "person" in the phrase 'to designate a person or persons ashore having direct access to the highest level of management' refers to .A. the manager of the shipping companyB. the master of the shipC. the designated person on board shipD. the designated person ashore81. Each ship shall carry on board a ship security plan approved by .A. the chief engineer officerB. the master of the shipC. the manager of the companyD. the Administration82. The installation and provision of fire fighting equipment is mainly subject to ___.A. ISM codeB. ISPS codeC. IBC codeD. FSS code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Older loop scavenged engines may have a single injector mounted centrally in the cylinder head. Because the exhaust valve is in the center of the cylinder head on modern uniflow scavenged engines the fuel valves (2 or 3) are arranged around the periphery of the head. The pressure at which the injector operates can be adjusted by adjusting the loading on the spring. The pressures at which the injectors operate vary depending on the engine, but can be as high as 540 bar. Some injectors have internal cooling passages in them extending into the nozzle through which cooling water is circulated. This is to prevent overheating and burning of the nozzle tip. Injectors on modern engines do not have internal cooling passages. They are cooled by a combination of the intensive bore cooling in the cylinder head being close to the valve pockets and by the fuel which is re-circulated through the injector when the follower is on the base of the cam or when the engine is stopped. As well as cooling the injector, re-circulating the fuel when the engine is stopped keeps the fuel at the correct viscosity for injection by preventing it from cooling down. Fuel injectors must be kept in good condition to maintain optimum efficiency, and to prevent conditions arising which could lead to damage within the cylinder. Injectors should be changed in line with manufacturers' recommendations, overhauled and tested. Springs can weaken with repeated operation leading to the injector opening at a lower pressure than designed. The needle valve and seat can wear which together with worn nozzle holes will lead to incorrect atomization and dribbling.83. Modern uniflow scavenged engines have .A. a single injector mounted in the center of the cylinder headB. several injectors mounted around the external boundary of the cylinder headC. a single injector mounted at the external boundary of the cylinder headD. several injectors mounted in the center of the cylinder head84. Cooling water is circulated through in some injectors.A. the nozzleB. the nozzle tipC. the internal passagesD. the fuel re-circulated85. Re-circulating the fuel when the engine is stopped can .①keep the fuel at the correct viscosity②cool the injectorA. ①B. ②C. ①②D. neither ① nor ②86. Springs in fuel injectors will become not strong enough to work because .A. the injector opens at a lower pressure than designedB. the needle valve and seat wear outC. the nozzle holes wear outD. long time in use第二组Displacement pumps are those where the volume of the pump chamber is alternately increased to draw the liquid in from the suction pipe and then decreased to force the liquid out into the delivery pipe. Centrifugal pumps are those wherein an impeller rotating at high speed throws the liquid by centrifugal force from the center to the periphery of the impeller where the liquid is discharged through the delivery outlet.Gear pump consists of two or more meshing gears (spur, single or double helical teeth) enclosed m a close-fitted housing. These are used extensively for pumping fuel oil, lubricating oil and hydraulic oil. When gears are unmeshed on the inlet side, a pressure drop occurs that helps the atmospheric pressure acting on the surface of the oil in the reservoir to force it up the pipe to fill the void, the oil is then transferred around the periphery of the pump housing. As the gear teeth mesh again on the outlet side, they form a seal that prevents oil from backing up to the inlet, the oil in the void is then be forced out into the discharge line.All vane pumps have a rotor driven within a ring (cam ring) by a drive shaft coupled to a prime mover. A cylindrical rotor with sliding vanes, generally in radial slots, rotates within the ring. The center of the rotor is offset from the center of the ring. In a simple vane pump, as the rotor turns, the vanes are forced outward against the inner surface of the cam ring by centrifugal force. This outward radial movement of the vanes and turning of the rotor causes the chamber between the vanes to increase as the vanes pass further away from the inlet port. This increase in volume results in a lowering of pressure until the atmospheric pressure is sufficient to force oil from the reservoir into the inlet chamber. Oil from the inlet is swept away by the vanes toward the outlet port through a decreasing series of chambers until it is forced through the outlet port. A vane pump of balanced design has an elliptical cam ring so that two pumping chambers are formed. This pump is in hydraulically balance, since the two intake and two outlet ports are diametrically opposed to each other. Therefore the side loads exerted on the rotor cancel out, thereby increasing bearing lift and permitting high operating pressure.87. According to the last sentence of paragraph 1, from where the liquid is discharged through the delivery outlet?A. from the eye of the impellerB. from passage of impellerC. from the periphery of the impellerD. from the impeller88. Which statement is NOT true?A. In a simple vane pump, the rotor and cam ring are exactly concentricB. Balanced vane pump has an elliptical cam ringC. Liquid in both gear pump and vane pump are forced out to the outlet.D. Balanced vane pumps can work at a higher pressure than the simple vane pump89. Gear pumps are widely used to transfer any one of the following but .A. fuel oilB. lube oilC. hydraulic oilD. fresh water90. Which statement is NOT true?A. While displacement pump works, volume of the working chamber will increase and decrease alternatelyB. A gear pump always has two gears.C. Any vane pump will have a rotor within a ringD. A balanced vane pump has two outlet ports and they are positioned symmetrically.第三组：Ship recycling contributes to sustainable development and is the environmentally friendly way of disposing of ships with virtually every part of the hull, machinery, equipment, fittings and even furniture being re-used. However, while the principle of ship recycling is a sound one, the reported status of working practices and environmental standards in recycling facilities often leaves much to be desired. Such growing concerns about environmental safety, health and welfare matters in the ship recycling industry have resulted in a growing belief that an international instrument to regulate the ship recycling process is urgently needed.Having become aware of the need to reduce the environmental, occupational health and safety risks related to ship recycling, as well as the need to secure the smooth withdrawal of ships that have reached the end of their operating lives, the International Maritime Organization (IMO) has taken action to develop a realistic and effective solution to the problem of ship recycling, which will takeinto account the particular characteristics of international maritime transport and the economic realities.91. Which statement of the following is true?A. Ship recycling is sustainable.B. Ship recycling is very friendly to our environment.C. Ship recycling is the best way to dispose the machinery, equipment, fittings and even furniture on board.D. Ship recycling brings many problems concerning environmental safety, health and occupational safety.92. Which information is not given in the text?A. Ship recycling contributes to sustainable development.B. The IMO believes that making an international instrument to regulate the ship recycling process is urgently in need.C. An international convention on ship recycling has been adopted.D. The IMO has taken action to develop an effective solution to the problem of ship recycling.93. What is the best explanation to the underline phrase "to secure the smooth withdrawal of ships"?A. To withdraw a ship mid make it in a safe condition.B. To secure the life of a ship and recycle it.C. To break a wreck.D. To finish the service of a ship and break it without other problems.94. What is the main problem lied in the ship recycling industry?A. It lies in the sustainable development.B. It is about how to recycle the ship as they can as possible.C. It is a big problem concerning environment, safety and health.D. The big problem is that ship-recycling will violate the regulations made by IMO.。
轮机英语问答题答案及翻译
1. how long have you worked on board?I have worked on board for 10 years.1。
你多长时间在船上工作的？我在船上工作了10年。
2. which certificate do you have now?I have the second engineer’s certificate.2。
该证书你有吗？我有个工程师的证书3. what is your marital status?how many departments are there on board?I am married. There are there departments on board.3。
什么是您的婚姻状况？有多少部门在船上呢？我结婚了。
在船上有三个部门。
4. how many people are there in your family? Are you married?There are there people in my family. Yes,I am married.4。
有多少人在你的家庭吗？你结婚了吗？那里有我的家人的人。
是的，我结婚了5. how many countries have you ever been to?I have been to seven countries.5。
有多少个国家，你有没有去过？我到过7个国家。
6. when did you begin to work on board? What kind of ship have you worked on?I began to work on board in 2000.i have worked on bulk sarriers.6。
你什么时候开始在船上工作的？什么样的船你工作呢？我开始在船上工作2000.i对散装sarriers工作。
7. how many importment canals are there all over the world?Three . the pamama ,suez and kiel.7。
轮机英语真题42期 甲类三管轮
轮机英语真题42期甲类三管轮中华人民共和国海事局20__7年第1期海船船员适任证书全国统考试题(总第42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74题，每题1分，第75题至78题，每题1.5分,第79题至80题,每题10分。
一、单项选择题1.The ______engine is used for alternators and some times for main propulsion with a gearbo_ toprovide a propeller of between 90 to 120 rpm.A.four-strokeB.two-strokeC.slow speedD.reversible2.The discharge flow of a reciprocating pump is ______.A.steadyB.in pulsationC.continuousD.large3.The cetane number of a diesel fuel oil indicates its ______.A.viscosityB.acid contentC.heating valueD.ignition quality4.Always ensure that the turning gear is______, even at the quay, the wave from other ships mayturn the propeller and thus the engine.A.disengagedB.engagedC.assembledD.disassembled5.Camshafts are usually driven by timing gears or ______.A.push rodschain drivesC.rocker armsD.flywheels6.The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass thelubricating orifices, during______.A.the upward strokeB.the downward strokeC.the power strokeD.the suction stroke7.The total starting air capacity required for reversible main engines is to be sufficient for a least______.A.si_ consecutive(连续的) startsB.eight consecutive startsC.ten consecutive startsD.twelve consecutive startsA dirty diesel engine oil filter element can best be detected by______.A.visual inspection of the elementsB.the pressure drop across the filterC.high lube oil sump temperatureD.decrease in oil viscosity from the filter9.Before a marine diesel engine is started the cylinders and pistons must be ______.A.cooled to ropriate temperatureB.warmed up gradually to ropriate temperatureC.opened up and renewedD.ground and polished10.A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A.friction clutchesB.disconnect clutchesreversing gearsD.reduction gears11.The ma_imum pressure developed by a waste heat boiler is determined by the main enginee_haust ______.A.gas positionB.gas temperatureC.pressureD.timing 12.______continuously e_tract the crankcase atmosphere, via a pipe system, and move it past asensitive and accurate opacity (不透明)measuring track.A.The oil mist detectorsB.The smoke detectorsC.An oily water monitorD.Oil discharge monitoring and controlling system13.The water in a ing au_iliary boiler should be tested daily for ______.A.dissolved o_ygenB.chloridesC.sludgeD.dissolved nitrogen14.A firebo_ e_plosion in an automatically fired au_iliary boiler may be the result of ______.A.e_cessive purging before lighting offB.insufficient trail for ignition periodC.a faulty transformer in the ignition circuitD.insufficient purging after lighting off15.A feed pump for an au_iliary boiler might lose suction if the______.A.boiler water level is lowB.feed-water is too hotC.boiler demand is lowD.feed-water is too cold16.The gear and screw pumps are classified as______.A.variable stroke pumpsB.multistage pumpsC.positive displacement pumpsD.triple-ported pumps17.The pressure of a liquid leaving the pump can be referred to as the ______.A.total headB.discharge headC.positive suction headD.suction head18.Which of the valves listed will be cycled from fully open to fully closed when the handle isturned 90 degree?A.A rising stem gate valveB.A globe s valveC.A check valveD.A butterfly valve19.A pump shaft that is bent or distorted should normally be ______.A.repaired by a suitable welding processB.straightened by lying heat and torsionC.reconditioned by metallizing and machiningD.replaced with a satisfactory spare20.A centrifugal pump may fail to deliver water when first started if the ______.A.water seal pipe is pluggedB.pump is not primedC.seal ring is improperly locatedD.impeller is flooded21.Which of the follog conditions must e_ist for heat to flow from one object to another?A.The two objects must be in physical contact.B.The two objects must be the same size.C.There must be an e_isting temperature differential.D.There must be an e_isting weight differential.22.The dew point of air is reached when the wet bulb temperature is ______.A.twice the dry bulb temperatureB.10℃ above the dry bulb temperatureC.5℃ above the dry bulb temperatureD.equal to the dry bulb temperature23.If air at 95 ℃ dry bulb temperature and 50 relative humidity is conditioned to 75 ℃ dry bulbtemperature and 50 relative humidity, it is an e_le of ______.A.cooling onlyB.cooling and humidifyingC.cooling and dehumidifyingD.adiabatic(绝热的) cooling24.In order to achieve greater dehumidification(除湿) with an air conditioning system, you should______.I.reduce the cooling coil temperature II.increase the re-heater temperatureA.I onlyB.II onlyC.Both I and IID.Neither I nor II25.Oily water separators are used to ensure that ships don"t discharge oil when pumping out ______.A.ballast waterB.boiler waterC.bilge waterD.sewage water26.When started, a plete oily water separating unit is firstfilled______.The oily water mi_tureis then pumped through the inlet pipe into the coarse separating partment.A.with dirty waterB.with clean waterC.by oily waterD.by mi_ed water27.Which is the pollution prevention equipment?A.booster pumpB.evaporatorC.incineratorD.cooler28.The oil sludge is burnt in the ______onboard.I’ll show you the ashes.A.boilerB.main engineC.au_iliary engineD.incinerator29.Most marine biological sewage treatment plants consist of all the follog statements e_cept______.A.aeration tanksB.settling tanksC.disinfection agentD.anaerobic bacteria (厌氧菌)30.Great care is dedicated to the removal of _____from the scavenge air.A.gravityB.viscosityC.densityD.humidity31.Dirty oil must be _____before being used again.A.mi_ed with clean oilB.purifiedC.heatedD.strained32.When a vacuum boiling evaporator works, the hot jacket waterwill pass over the tube stack and___the sea water passing through the tubes.A.disposeB.dissolveC.heatD.dissipates33.When securing a flash-type evaporator for an e_tended period of time, you should ______.A.fill the unit with saltwaterB.fill the unit with descaling poundC.pletely drain the unitD.tightly seal the unit to e_clude air34.Among the basic categories of equipment, which of the follog are used to allow the hydraulicenergy to be controlled?A.hydraulic pumpsB.valvesC.hydraulic cylindersD.hydraulic motors35.Positive displacement, helical gear(斜齿轮) pumps are well suited for pumping oil because______.A.stuffing bo_es eliminate the leakage problems usually associated with other gear pumpsB.it is not necessary to closely maintain design clearances with this pumpC.they are essentially self-priming and produce a high suction liftD.these pumps are designed with e_treme tooth angles36.The oil in a cargo ch gear bo_ should be sled periodically(周期性地) to ______.A.prevent the gear bo_ from leakingB.prevent the oil from being inflammable(易燃的)make sure it has not bee contaminated(污染)D.make sure the motor bearings are lubricated37.If an anchor dlass has been idle for some time, you should______.A.repack all valve stemsB.lubricate it prior to useC.replace the foundation boltsD.balance the warping heads 38.A mooring ch should be equipped with mechanical brakes capable of holding ______.A.half the breaking strength of the mooring lineB.the full breaking strength of the mooring lineC.the ma_imum e_pected tension(张力) of the mooring lineD.50 over the working tension of the mooring line39.Hydraulic cranes must be properly warmed-up before being operated because ______.A.warm-up allows the hydraulic system to bee charged with oilwarm-up allows the relief valves to be properly testedC.hydraulic strainers operate only during the warm-up periodD.hydraulic fluid must be at the proper viscosity40.The current flog first in one direction and then in another is called ____current.A.a rushB.an alternatingC.a directD.an e_citing41.The frequency of an alternator at a given RPM is determined by the ______.A.number of turns of wire in the armature coilB.number of magic polesC.strength of the mags usedD.output voltage42.While paralleling two AC generators using synchronizing(同步的) ls only, both ls willgo dark when the generators are ______.A.running at the same speedB.groundedC.of the same polarity(极性)D.in phase43.The load sharing characteristics of two diesel generators operating in parallel are mostlydependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings44.Electric insulation is made of organic substances and so gradually ______with age.A.deterioratesB.increasesC.are fouledD.bees better45.The main generators are connected to ______.A.distribution boardsB.section boardsC.emergency switch boardsD.main switch boards46.The operation of _____two alternators requires the voltages to be equal and also in phase.A.controlB.series-mountingC.runningD.paralleling47.______is a machine by which electrical energy is transformedinto mechanical energy.A.An alternatorB.An electric motorC.A diesel engineD.A main switchboard48.A ground in an electrical circuit outside the engine room ______.A.cannot be detected under normal conditionsB.is of no consequence to engineering personnelC.is indicated at the branch circuit breaker panelD.is indicated by the ground detecting ls on the main switchboard49.Time delayed or delayed action-type fuses are designed to ______.A.prevent grounds in branch circuitsB.prevent opens in motor circuitsC.permit momentary overloads without meltingD.guard lighting and electronic circuits50.When voltage and current developed in an AC circuit reach their peak values at the same time,the power factor is ______.A.laggingB.leadingC.ma_imumD.minimum51.When there is a fire in a large electric motor, normally the very FIRST step is to ______.A.secure the electric supplyB.ventilate area to remove smokeC.start the fire pump and lead out hoseD.ly foam52.Before “stand by” is rung on the engine telegraph, it is usual to give the main diesel engine a brieftrial ______ahead and astern.A.with powerB.on powerC.with airD.on air53.Bridge orders must be ______and a record of any required changes in speed and direction shouldbe kept.A.slowly carried awayB.carried out with a period of delayC.promptly carried outD.paid by the captain54.After the order " ______" is given, the air system is shut down, the turning gear put in.A.Finished With EngineB.S The EngineC.Stand-by EngineD.Slow-down Engine55.A tank has been sealed and unventilated(不通风的) for a long period of time.Which of thefollog conditions does this indicate?A.The tank is safe to enter.The tank is especially dangerous to enter.C.Carbon mono_ide(一氧化碳) is present.D.Water vapor present when the tank was sealed has o_idized(使氧化).56.Fires involving bustible metals are classified as ______.A.class "A" firesB.class "B" firesC.class "C" firesD.class "D" fires57.The three basic ponents of a fire are chain reaction, heat, fuel, and ______.A.carbon mono_ideB.o_ygenC.carbon dio_ideD.any gaseous substance58.CO2 e_tinguishes a fire by __________.A.a blanket of bubbles formed on the surface of the firesmotheringC.isolating the heat from the fuelD.cooling59.Seawater may be used for drinking water ______.A.at a ma_imum rate of two ounces(盎司) per dayB.after mi_ing with an equal quantity of fresh waterC.if gather during or immediately after a hard rainD.under no circumstance60.Obviously, for a given fuel oil, its pour point is ______its cloud point.A.lower thanB.higher thanC.as same asD.better than61.Now that the valve is not worth ______, I suggest it ______.A.to repair/renegrepairing/renegC.to repair/ be renewedD.repairing/be renewed 62.When a vessel is in dry-dock, the vessel"s engineers should ______.A.e_amine the condition of the propellerB.chip and paint all hull protection zincsC.install new docking plugs in all cofferdamsD.inspect the hull for hogging or sagging63.The additional mark ______in the Classification Certificate for Machinery represents thepropulsion aratus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.A.BRCB.MCCC.AUT-0D.AUT-164.Oil Record Book Part I shall be provided to ______.every oil tankerB.every ship of 400 tons gross tonnage and aboveC.every shipD.any ship65.“Inability to provide for the first watch at the mencement of a voyage and for subsequentrelieving watches persons who are sufficiently rested and otherwise fit for duty.” is considered to be one of the detainabledeficiencies(缺乏) under ______.A.the SOLAS ConventionB.the MARPOL ConventionC.the STCW ConventionD.the LOAD LINE Convention66.The Port State Control officer may witness a fire drill carried out by the crew assigned to theseduties on the ______.A.Navigation Log BookB.Engine Room Log BookOil Record BookD.Muster List67.When deciding the position of the engineering watch, which may include _____ropriately,many factors shall be taken into account.A.satisfied engineersB.qualified ratingsC.satisfied chief engineerD.qualified chief engineer68.During an engine room watch if immediate action is necessary to ensure safety of the ship, itsmachinery and crew, ______.A.the chief engineer must be informed at firstB.the captain must be informed at firstC.it must be taken by the duty engineerD.the generator engine must be sped69.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.skimmersB.strawC.dispersantsD.sawdust70.According to the international regulations concerning the prevention of pollution of sea areasfrom ships, the disposal into the sea of all plastics is ______.A.weleB.admitted in some special sea areasC.prohibitedD.acceptable71.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(分散) or dissolve the oil in the waterD.not affect the oil72.The main objective of the SOLAS Convention is to specify______for the construction,equipment and operation of ships, patible their safety.A.at most referencesB.at least referencesC.ma_imum standardsD.minimum standards73.These acid residues must be prevented from entering the crankcase, otherwise the lube oil wouldbe _______.A.optimizedB.emulsifiedC.contaminatedD.o_idated74.The ship security officer shall have knowledge and have received training, taking into account theguidance given in Part B of______.A.the ISM CodeB.the ISPS CodeC.the IBC CodeD.the IGC Code二、关联题（关联题题干下有4个小题，每小题4个选项）The clearly visible benefit of RT-fle_ engines is their smokeless operation at all ship speeds.This is achieved by the superior bustion performance with the mon-rail fuel injection.This system maintains the fuel injection pressure at the optimum level right across the engine speed range, ensuring optimum bustion under all operating conditions.In addition, a selective shut-off of single injectors at very low speeds and an optimized e_haust valve timing help to keep smoke emissions below the visible limit.Sulzer RT-fle_ engines also have the advantage of steady running at lower speeds than engines with mechanically-controlled injection.They can run very steadily, and without smoking, at 10-12 of nominal speed, which for the RT-fle_ 60C is about 10-14rpm.This is made possible by the precise control of injection, together with the higher injection pressures achieved at low speed, and the sequential shut-off injectors.75.According to above massage, the advantage of mon-rail injection is______.A.smokeless operationB.shockless operationC.noiseless operationD.no vibration operation76.According to above massage, RT-fle_ engine can optimize______.① fuel injection pressure② b ustion③ e_haust valve timingA.①②B.①②③C..③D.②77.The key feature of the Sulzer RT-fle_ system is that it gives plete freedom in the _____andoperation of fuel injection and e_haust valve actuation.A.meteringB.timingC.controlD.using78.The RT-fle_ engine can run at very low speed, this is made possible by follog things e_cept_______.A.the precise control of injectionB.the higher injection pressuresC.the optimized e_haust valve timingD.the sequential shut-off injectors 三、中译英（共2题，请将答案写在答题纸上）79、（轮机日志）上午10时30分，由于不明原因运行中NO.1发电机跳闸，导致全船失电,NO.2发电机自动起动恢复正常供电。
三管轮轮机英语大证考试真题40期
中华人民共和国海事局2006年第2期海船船员适任证书全国统考试题(总第40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74题，每题1分，第75题至78题，每题1.5分,第79题至80题, 每题10分。
一、单项选择题1.______usually helps to induce air movement to assist combustion.A. Cylinder coverB. Main bearingC. The exhaust valveD. The piston movement2.The mechanical efficiency of an engine is always less than 100% ______lossesoccurring in the form of friction.A. becauseB. sinceC. due toD. owing3.The exhaust ports are located around the lower part of the cylinder liner, ______theproducts of combustion are driven by scavenging air.A. in whichB. by whichC. through whichD. from which4.The third engineer took the ______and checked the tank table in the office andrecorded all relevant data, as well as calculated the bunkering.A. water levelB. sump levelC. ballast tank levelD. ship's trim5.The lubricating pipes and ducts should be blown out with ______.A. the atmosphereB. the fresh waterC. the compressed airD. the chemical compounds6.______neutralizes the acid conditions and ______cleanses the rings and grooves.A. The detergency/the alkalinityB. The alkalinity/the detergencyC. The inhabitant/ the waterD. The additives/the distilled water7.If the engine does not start on air, it may be due to______.A. low compression of the fuel pumpsB. incorrect timing of fuel pumpsC. the starting air valves stuckD. air-locks in fuel oil pipeline8.______device is provided to prevent starting air from being admitted to thecylinder before the reversing is completed.A. An automaticB. A transmissionC. A self-regulatingD. An interlocking9. A reduction in load on a diesel engine results in ______of speed of the crankshaft.A. a reductionB. an increaseC. an outingD. a downwards10.Fuel injection uses the jet pump system and a Woodward type hydraulic ______isused to control engine speed.A. controllerB. governorC. instrumentD. apparatus 11.The overspeeding of the diesel engine driving an electric generator could cause______.A. low voltage trip to tripB. reverse power trip to tripC. damage to windingsD. excessive exhaust temperatures12.Any carbon built up on surfaces must be washed away by ______additives andheld in suspension by a ______additive.A. dispersant /detergentB. detergent/dispersantC. dispersant /dispersantD. detergent/detergent13.While flowing through the volute in a centrifugal pump, part of the ______energyof the liquid is converted to ______energy.A. kinetic/pressureB. kinetic/essentialC. pressure/kineticD.pressure/height14.Gear pumps are ______because they discharge a near constant amount of liquidregardless of pressure.A. negative displacement typeB. turbine typeC. positive displacement typeD. mixed-flow type15.Operating a rotary pump at speeds in excess of design requirements couldcause______.A. decreased clearances between rotating partsB. decreased slippage to the suction side of the pumpC. air binding in the discharge portsD. erosion and excessive wear16.The fire pumps must be capable of delivering a total quantity of water at a definedhead , not less than______of the total bilge pumping capacity.A. one-thirdB. two-thirdsC. one-fourthD. two-fourths17.The bilge system has been performing well; however, the aft starboard engineroom bilge-well suddenly fails to be pumped out. Which of the following should be done first to determine the cause?A. Open the bilge pump for inspection.B. Remove each of the manifold valves.C. Remove only the manifold valve to the affected bilge-well.D. Attempt to pump out another bilge well to determine if the entire system isaffected.18.Which of the following statements describes one of the functions of the ballastsystem?A. To permit flooding of any fuel oil storage tank on any class of ship.B. To use it as a secondary service system.C. To store reserve feed or potable water for extended cruises.D. To stabilize the ship by flooding certain designed tanks with seawater.19.If an operating auxiliary boiler has a water pH reading of 7, you should ______.A. bottom blow the boilerB. treat the water with caustic soda1C. treat the water with chemical scavengersD. reduce the water alkalinity to recommended readings20.Where tanks are arranged for either oil or ballast ______must be fitted in thepipeline.A. a change-over chestB. a head tankC. a emergency bilge pumpD. an aircooler21.The most common cause of scale formation in an auxiliary boiler is ______.A. concentrations of calcium sulphate in the boiler waterB. fuel oil in the feedwaterC. improper treatment of the feed water with calcium sulphateD. excessive feed water alkalinity22.The ______of the gravity disc is too big. It cause oil to flow through the wateroutlet. We changed the disc and no oil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder23.Oil water separators are used to ensure that ships don't discharge oil when______bilge water.A. to pump offB. being pumpedC. pumping outD. it pumping out24. A high rate of separation between oil and water is favored by______.A. large size of oil globuleB. low temperature25. C. high viscosity D. high flow rate26.Medium speed engines have a ______power to weight ratio than the slow speedtwo strokes, but due to the higher speeds tend to have ______maintenance intervals.A. higher/reducedB. higher/increasedC. lower/reducedD. lower/increased27.Oil Record Book Part I shall be provided to every oil tanker of 150 tons grosstonnage and above and every ship of 400 tons gross tonnage and above, ______oil tankers, to record relevant machinery space operations.A. as well asB. as long asC. rather thanD. other than28.It is important with all hydraulic systems to ensure that interlocking arrangementsprovided for pump or motor control levers are before the pump driving motor can be started.A. in the port positionB. in the starboard positionC. in the neutral positionD. to be dismantled29.The hand steering is a method by which the motion of the rudder is controlledwith______.A. a motor-driven steering wheelB. a pneumatic steering wheelC. a hand-driven steering wheelD. an electric steering wheel30.With reference to operating a four-ram steering gear system under emergencyconditions, which one of the following statements is incorrect ?A. Only one pump should be used at any timeB. The ship speed should be reduced to 70% of the normalC. Watch keeping of the steering gear should be increasedD. Limitations of the steering gear should be logged but the bridge need not beinformed31.Which of the following problems can result in below normal pressure in theintercooler of an operating low pressure air compressor?A. Defective pressure pilot valveB. Defective receiver relief valveC. Leaking intake valves on the high pressure cylinderD. Leaking discharge valves on the low pressure cylinder32.The air charge leaving an intercooler, or after-cooler of an air compressor can beexpected to be __.A. superheatedB. super-cooledC. at or below the dew pointD. all of theabove33.Open the ______of inter cooler before starting an air compressor.A. cylinder coverB. cooling waterC. oil cupD. drain valve34.Sludge may form in the crankcase of an air conditioning compressor as a resultof______.A. bubbling refrigerantB. overheating and oxidationC. lowered operating temperaturesD. reducing the cloud or flash point35.If a refrigeration system were short of refrigerant, the condition would result in______.A. continuous running of the compressorB. high suction pressureC. high discharge pressureD. short cycling of the compressor on the waterfailure switch36.Which of the statements listed concerning heat transfer is correct?A. Heat is always transferred at a constant rate.B. Heat transfer rate increases as temperature difference increases.C. The rate of heat transfer is not affected by temperature difference.D. The high temperature region is known as a heat sink.37.The purpose of the low pressure cutout switch is to______.A. maintain liquid refrigerant at the suction of the compressorB. maintain a preset suction pressure to the compressorC. start and stop the compressor at preset operating pressuresD. operate at minimum efficiency38.When a refrigeration compressor is in the 'off' cycle, the thermal expansion valvewill______.A. always be wide open when the compressor restartsB. continue to operate as if the system were in operationC. remain open until evaporator pressure equalizes, then close until the compressorrestartsD. always be completely closed until the compressor restarts239.The star formation is most commonly used and requires ______on the alternator.A. one slip-ringB. two slipringsC. three slipringsD. four sliprings40. A constant output voltage from an AC generator is maintained by the ______.A. prime mover governorB. exciter generatorC. voltage regulatorD. reverse power relay41.Prior to any overhaul work on electric equipment, it is important to ensure thecircuits are______.A. liveB. deadC. excitedD. on line42.Which of the following should be the FIRST step in removing a generator fromparallel operation?A. Trip the generator off the switchboard.B. Turn off all electrical equipment.C.Remove the load from the … offgoing' generator.D. Increase the cycles of the generator staying on the line.43. A … dead front' switchboard is one ______.A. without switches on itB. with insulated switches and no exposed terminalsC. without circuit breakersD. without safety hand rails nor rubber mats44.In ______the control action is independent on the output.A. a closed loop control systemB. an open loop control systemC. a boiler control systemD. a steering gear automatic control system45.Every precaution must be taken to avoid ______.A. sparking being taking placeB. to spark taking placeC. sparking to be taken placeD. sparking taking place46.The ______is used to measure the volume of a liquid or gas through a pipelinewithin any given period of time.A. flowmeterB. viscometerC. micrometerD. feeler47. A salinity indicator is used to determine the ______.A. cause of salt contaminationB. location of salt water contaminationC. chemical makeup of feed-waterD. level of alkalinity in condensate48.In order to accurately measure very low pressures, which of the instruments listedshould be used?A. Compound gageB. Bourdon tubeC. ManometerD. Deadweight gage49. A circuit breaker and a fuse have a basic similarity in that they both ______.A. can be reset to energize the circuitB. should open the circuit when overloadedC. will burn out when an over current flow developsD. all of the above50.The main difference between a motor control circuit containing low voltageprotection and low voltage release is that the latter contains______.A. a magnetic operating coilB. normally open line contactsC. thermal-overload protectionD. a momentary-contact start button51.If the engine ______for a long period, there will be a danger of frost.A. must stand inoperativeB. has to stand inoperativeC. must be stood idleD. will stand idle52.If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed,ignition may be delayed because the ______.A. cylinder compression pressure may not be high enoughB. cylinder compression temperature may be too highC. fuel oil injection pressure may not be high enoughD. scavenge and purge process is incomplete53.Improper cooling of a diesel engine cylinder liner due to the accumulation of scaledeposits, may cause______.A. low compression pressureB. increased piston wearC. increased cylinder lube oil consumptionD. poor contact between compression rings and liner54.Poor combustion in a diesel engine can be caused by______.A. high compression pressureB. low intake air temperatureC. low exhaust pressureD. high scavenge air temperature55.High exhaust temperature and black smoke exhausting from an auxiliary dieselengine can be caused by ______.A. engine overloadB. low combustion temperatureC. plugged fuel nozzle holesD. excessive compression pressure56.In a diesel engine, excessive cylinder liner wear will cause ______.I. increased blow-by II. wear between the piston ring and grooveA. I only is correctB. II only is correctC. both I and II are correctD. neither I or II are correctbustion knock can occur in the cylinders of a diesel engine under anycondition permitting ______.A. a shortened ignition delay periodB. a lean fuel/air mixtureC. excess fuel in the combustion chamberD. rapid vaporization of injected fuel droplets58.The load on the crosshead pin is always______, so it is the ______half of thebearing which is subject to wear.A. upwards/topB. upwards/bottomC. downwards/topD. downwards/bottom59.If the action of the engine indicates that some of the cylinders are not firing, theones affected may be determined by watching ______.3A. the bad smokeB. the smoky exhaustC. the exhaust temperatureD. the peak pressure60. A centrifugal pump can‟t supply water after starting. You should firs tly check ___.A. discharge valveB. power supplyC. packing glandD. bearing lubrication61.Which of the motors for the devices listed below is fitted with an instantaneous(瞬时的) overload relay?A. FanB. PumpC. WinchD. Machine tool62.If ______are taken at regular intervals, any unequal distribution of load will beeasily found out.A. indicator diagramsB. nomo-gramC. temperature readingsD. pressure readings63.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 tanks64.The resistance of electric wire will decrease as its ______.A. length increasesB. cross-sectional area increasesC. temperature increasesD. percent of metallic purities increases65.It is well known that the wh ole power distribution of the ship‟s electrical servicesmainly depend on the______.A. sub-boardsB. main switchboardsC. emergency switchboardsD. distribution boards66.The Company should ensure that ______documents are promptly removed.A. absoluteB. updatedC. outdatedD. new67.You may improve a vessel's stability by ______.A. keeping the fuel tanks topped offB. increasing the free surface effectC. keeping the fuel tanks at least half fullD. keeping at least one fuel tank empty for slops68.The most common type of containment device for spilled oil on the water is the useof ______.A. strawB. boomsC. skimmersD. chemical dispersants69.We‟ve trie d many ways, but all in vain. Only in this way, ___the problem, I‟m sure.A. can we solveB. we can solveC. we will solveD. can be solved70.It was ______midnight that we removed the trouble and went back to our cabins.A. untilB. not untilC. not beforeD. not after71.The flash point of a petroleum product is an indication of its______.A. viscosityB. pour pointC. volatilityD. lower explosive limit72.If there has been a fire in a closed unventilated compartment it may be unsafe toenter because of ______.A. unburned carbon particlesB. excess nitrogenC. a lack of oxygenD. excess hydrogen73.Tell your men ______the rules and procedures of working when dismantling theequipment.A. not to go againstB.don‟t go againstC. not go to againstD. to not goagainst74.The minimum number and capacity of bilge pumps and fire pumps and theirdistributing within the ship is governed by______.A. Classification Society RulesB. National requirementsC. The IMO International Convention for the Safety of Life at SeaD. All of the above.75.The SOLAS Convention in its successive forms is generally regarded as the mostimportant of all international treaties concerning the ______of merchant ships.A. pollutionB. economizationC. safetyD. efficiency二. 关联题（关联题题干下有4个小题，每小题4个选项）The windlass is the usual anchor-handling device where one machine may be used to handle both anchors. A more recent development, particular on largervessels, is the split windlass where one machine is used for each anchor.The rotating units of a split windlass consist of a cable lifter with shaped snug to grip the anchor cable, a mooring drum for paying out or letting go of mooringwires and a warp end for warping duties. Each of these units may be separatelyengaged or disengaged by means of a dog clutch, although the warp end is oftendriven in association with mooring drum. A spur gear assembly transmits the motor drive to the shaft where the various dog clutches enable the power take-off.Separate band brakes are fitted to hold the cable lifter and the mooring drum when the power is switched off.The cable lifter unit is mounted so as to raise and lower the cable from thespurling pipe, which is at the top and the chain or cable locker.Anchor capstans are used in some installations where the cable lifter rotatesabout a vertical axis. Only the cable lifter unit is located on deck, the drivingmachinery being on the deck below.76.According to the passage, the rotating units of a split windlass don‟t include______.A. a cable lifterB. a mooring drumC. a chain lockerD. a warp end77.The word “assembly” in the sentence “ A spur gear assembly transmits the motordrive to the shaft where the various dog clutches enable the power take-off.” is as the same meaning as ______.A. unitB. shaftC. dog clutchD. spurling pipe78.One of the functions of a dog clutch is ______.A. to transmit the motor drive to the shaft4B. to hold the cable lifter and the mooring drum when the power is switched offC. to engage or disengage the rotating units of a split windlass separatelyD. to handle both anchors79.Which of the following statements is correct ?A. A more recently development, particularly on larger vessels, is the splitwindlass where one machine is used to handle both anchors.B.The word “machine” in the passage refers to the windlass.C. Anchor capstans are used in some installation where the cable lifter rotatesabout a horizontal axis.D. Both the cable lifter unit and the driving machinery are located on deck.三、中译英（共2题，请将答案写在答题纸上）79. （修理单）辅助锅炉水空间需采用化学方法除去水垢，如发现有烧坏的管子则换新，安全释放阀调至设定值。
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中华人民共和国海事局2007年第1期海船船员适任证书全国统考试题(总第42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74题，每题1分，第75题至78题，每题1.5分,第79题至80题,每题10分。
一、单项选择题1.The ______engine is used for alternators and some times for main propulsion with a gearbox toprovide a propeller of between 90 to 120 rpm.-A. four-stroke B. two-stroke C. slow speed D. reversible2.The discharge flow of a reciprocating pump is ______.A. steady -B. in pulsationC. continuousD. large3.The cetane number of a diesel fuel oil indicates its ______.A. viscosityB. acid contentC. heating value -D. ignition quality4.Always ensure that the turning gear is______, even at the quay, the wave from other ships mayturn the propeller and thus the engine.A. disengaged -B. engagedC. assembledD. disassembled5.Camshafts are usually driven by timing gears or ______.A. push rods -B. chain drivesC. rocker armsD. flywheels6.The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass thelubricating orifices, during______.-A. the upward stroke B. the downward strokeC. the power strokeD. the suction stroke7.The total starting air capacity required for reversible main engines is to be sufficient for a least______.A. six consecutive(连续的) startsB. eight consecutive startsC. ten consecutive starts -D. twelve consecutive starts8. A dirty diesel engine oil filter element can best be detected by ______.A. visual inspection of the elements -B. the pressure drop across the filterC. high lube oil sump temperatureD. decrease in oil viscosity from the filter9.Before a marine diesel engine is started the cylinders and pistons must be ______.A. cooled to appropriate temperature-B. warmed up gradually to appropriate temperatureC. opened up and renewedD. ground and polished10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A. friction clutchesB. disconnect clutches -C. reversing gearsD. reduction gears11.The maximum pressure developed by a waste heat boiler is determined by the main engineexhaust ______.A. gas composition -B. gas temperatureC. pressureD. timing 12.______continuously extract the crankcase atmosphere, via a pipe system, and move it past asensitive and accurate opacity (不透明)measuring track.-A. The oil mist detectorsB. The smoke detectorsC. An oily water monitorD. Oil discharge monitoring and controlling system13.The water in a steaming auxiliary boiler should be tested daily for ______.A. dissolved oxygen -B. chloridesC. sludgeD. dissolved nitrogen14. A firebox explosion in an automatically fired auxiliary boiler may be the result of ______.A. excessive purging before lighting offB. insufficient trail for ignition periodC. a faulty transformer in the ignition circuit-D. insufficient purging after lighting off15. A feed pump for an auxiliary boiler might lose suction if the ______.A. boiler water level is low -B. feed-water is too hotC. boiler steam demand is lowD. feed-water is too cold16.The gear and screw pumps are classified as______.A. variable stroke pumpsB. multistage pumps-C. positive displacement pumps D. triple-ported pumps17.The pressure of a liquid leaving the pump can be referred to as the ______.A. total head -B. discharge headC. net positive suction headD. suction head18.Which of the valves listed will be cycled from fully open to fully closed when the handle isturned 90 degree?A. A rising stem gate valveB. A globe stop valveC. A check valve -D. A butterfly valve19. A pump shaft that is bent or distorted should normally be ______.A. repaired by a suitable welding processB. straightened by applying heat and torsionC. reconditioned by metallizing and machining-D. replaced with a satisfactory spare20. A centrifugal pump may fail to deliver water when first started if the ______.A. water seal pipe is plugged -B. pump is not primedC. seal ring is improperly locatedD. impeller is flooded21.Which of the following conditions must exist for heat to flow from one object to another?A. The two objects must be in physical contact.B. The two objects must be the same size.C. There must be an existing temperature differential.D. There must be an existing weight differential.22.The dew point of air is reached when the wet bulb temperature is ______.A. twice the dry bulb temperatureB. 10℃ above the dry bulb temperatureC. 5℃ above the dry bulb temperatureD. equal to the dry bulb temperature23.If air at 95 ℃ dry bulb temperature and 50% relative humidity is conditioned to 75 ℃ dry bulbtemperature and 50% relative humidity, it is an example of ______.A. cooling onlyB. cooling and humidifyingC. cooling and dehumidifyingD. adiabatic(绝热的) cooling24.In order to achieve greater dehumidification(除湿) with an air conditioning system, you should______. I. reduce the cooling coil temperature II. increase the re-heater temperatureA. I onlyB. II onlyC. Both I and IID. Neither I nor II25.Oily water separators are used to ensure that ships don't discharge oil when pumping out ______.A. ballast waterB. boiler waterC. bilge waterD. sewage water26.When started, a complete oily water separating unit is first filled______. The oily water mixtureis then pumped through the inlet pipe into the coarse separating compartment.A. with dirty waterB. with clean waterC. by oily waterD. by mixed water27.Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler28.The oil sludge is burnt in the ______onboard. I’ll show you the ashes.A. boilerB. main engineC. auxiliary engineD. incinerator29.Most marine biological sewage treatment plants consist of all the following statements except______.A. aeration tanksB. settling tanksC. disinfection agentD. anaerobic bacteria (厌氧菌)30.Great care is dedicated to the removal of _____ from the scavenge air.A. gravityB. viscosityC. densityD. humidity31.Dirty oil must be _____ before being used again.A. mixed with clean oilB. purifiedC. heatedD. strained32.When a vacuum boiling evaporator works, the hot jacket water will pass over the tube stack and___ the sea water passing through the tubes.A. disposeB. dissolveC. heatD. dissipates33.When securing a flash-type evaporator for an extended period of time, you should ______.A. fill the unit with saltwaterB. fill the unit with descaling compoundC. completely drain the unitD. tightly seal the unit to exclude air34.Among the basic categories of equipment, which of the following are used to allow the hydraulicenergy to be controlled?A. hydraulic pumpsB. valvesC. hydraulic cylindersD. hydraulic motors35.Positive displacement, helical gear(斜齿轮) pumps are well suited for pumping oil because______.A. stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB. it is not necessary to closely maintain design clearances with this pumpC. they are essentially self-priming and produce a high suction liftD. these pumps are designed with extreme tooth angles36.The oil in a cargo winch gear box should be sampled periodically(周期性地) to ______.A. prevent the gear box from leakingB. prevent the oil from becoming inflammable(易燃的)C. make sure it has not become contaminated(污染)D. make sure the motor bearings are lubricated37.If an anchor windlass has been idle for some time, you should ______.A. repack all valve stemsB. lubricate it prior to useC. replace the foundation boltsD. balance the warping heads 38. A mooring winch should be equipped with mechanical brakes capable of holding ______.A. half the breaking strength of the mooring lineB. the full breaking strength of the mooring lineC. the maximum expected tension(张力) of the mooring lineD. 50% over the working tension of the mooring line39.Hydraulic cranes must be properly warmed-up before being operated because ______.A. warm-up allows the hydraulic system to become charged with oilB. warm-up allows the relief valves to be properly testedC. hydraulic strainers operate only during the warm-up periodD. hydraulic fluid must be at the proper viscosity40.The current flowing first in one direction and then in another is called ____ current.A. a rushB. an alternatingC. a directD. an exciting41.The frequency of an alternator at a given RPM is determined by the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage42.While paralleling two AC generators using synchronizing(同步的) lamps only, both lamps willgo dark when the generators are ______.A. running at the same speedB. groundedC. of the same polarity(极性)D. in phase43.The load sharing characteristics of two diesel generators operating in parallel are mostlydependent on their governor ______.A. load limit settingsB. idle speed settingsC. speed limit settingsD. speed droop settings44.Electric insulation is made of organic substances and so gradually ______with age.A. deterioratesB. increasesC. are fouledD. becomes better45.The main generators are connected to ______.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards46.The operation of _____ two alternators requires the voltages to be equal and also in phase.A. controlB. series-mountingC. runningD. paralleling47.______is a machine by which electrical energy is transformed into mechanical energy.A. An alternatorB. An electric motorC. A diesel engineD. A main switchboard48. A ground in an electrical circuit outside the engine room ______.A. cannot be detected under normal conditionsB. is of no consequence to engineering personnelC. is indicated at the branch circuit breaker panelD. is indicated by the ground detecting lamps on the main switchboard49.Time delayed or delayed action-type fuses are designed to ______.A. prevent grounds in branch circuitsB. prevent opens in motor circuitsC. permit momentary overloads without meltingD. guard lighting and electronic circuits50.When voltage and current developed in an AC circuit reach their peak values at the same time,the power factor is ______.A. laggingB. leadingC. maximumD. minimum51.When there is a fire in a large electric motor, normally the very FIRST step is to ______.A. secure the electric supplyB. ventilate area to remove smokeC. start the fire pump and lead out hoseD. apply foam52.Before “stand by” is rung on the engine telegraph, it is usual to give the main diesel engine a brieftrial ______ahead and astern.A. with powerB. on powerC. with airD. on air53.Bridge orders must be ______and a record of any required changes in speed and direction shouldbe kept.A. slowly carried awayB. carried out with a period of delayC. promptly carried outD. paid by the captain54.After the order ' ______' is given, the air system is shut down, the turning gear put in.A. Finished With EngineB. Stop The EngineC. Stand-by EngineD. Slow-down Engine55. A tank has been sealed and unventilated(不通风的) for a long period of time. Which of thefollowing conditions does this indicate?A. The tank is safe to enter.B. The tank is especially dangerous to enter.C. Carbon monoxide(一氧化碳) is present.D. Water vapor present when the tank was sealed has oxidized(使氧化).56.Fires involving combustible metals are classified as ______.A. class 'A' firesB. class 'B' firesC. class 'C' firesD. class 'D' fires57.The three basic components of a fire are chain reaction, heat, fuel, and ______.A. carbon monoxideB. oxygenC. carbon dioxideD. any gaseous substance58.CO2 extinguishes a fire by __________.A. a blanket of bubbles formed on the surface of the fireB. smotheringC. isolating the heat from the fuelD. cooling59.Seawater may be used for drinking water ______.A. at a maximum rate of two ounces(盎司) per dayB. after mixing with an equal quantity of fresh waterC. if gather during or immediately after a hard rainD. under no circumstance60.Obviously, for a given fuel oil, its pour point is ______its cloud point.A. lower thanB. higher thanC. as same asD. better than61.Now that the valve is not worth ______, I suggest it ______.A. to repair/renewingB. repairing/renewingC. to repair/ be renewedD. repairing/be renewed 62.When a vessel is in dry-dock, the vessel's engineers should ______.A. examine the condition of the propellerB. chip and paint all hull protection zincsC. install new docking plugs in all cofferdamsD. inspect the hull for hogging or sagging63.The additional mark ______in the Classification Certificate for Machinery represents thepropulsion apparatus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.A. BRCB. MCCC. AUT-0D. AUT-164.Oil Record Book Part I shall be provided to ______.A. every oil tankerB. every ship of 400 tons gross tonnage and aboveC. every shipD. any ship65.“Inability to provide for the first watch at the commencement of a voyage and for subsequentrelieving watches persons who are sufficiently rested and otherwise fit for duty.” is considered to be one of the detainable deficiencies(缺乏) under ______.A. the SOLAS ConventionB. the MARPOL ConventionC. the STCW ConventionD. the LOAD LINE Convention66.The Port State Control officer may witness a fire drill carried out by the crew assigned to theseduties on the ______.A. Navigation Log BookB. Engine Room Log BookC. Oil Record BookD. Muster List67.When deciding the composition of the engineering watch, which may include _____appropriately,many factors shall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief engineer68.During an engine room watch if immediate action is necessary to ensure safety of the ship, itsmachinery and crew, ______.A. the chief engineer must be informed at firstB. the captain must be informed at firstC. it must be taken by the duty engineerD. the generator engine must be stopped69.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.A. skimmersB. strawC. dispersantsD. sawdust70.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 sea areasC. prohibitedD. acceptable71.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(分散) or dissolve the oil in the waterD. not affect the oil72.The main objective of the SOLAS Convention is to specify ______for the construction,equipment and operation of ships, compatible their safety.A. at most referencesB. at least referencesC. maximum standardsD. minimum standards73.These acid residues must be prevented from entering the crankcase, otherwise the lube oil wouldbe _______ .A. optimizedB. emulsifiedC. contaminatedD. oxidated74.The ship security officer shall have knowledge and have received training, taking into account theguidance given in Part B of______.A. the ISM CodeB. the ISPS CodeC. the IBC CodeD. the IGC Code二、关联题（关联题题干下有4个小题，每小题4个选项）The clearly visible benefit of RT-flex engines is their smokeless operation at all ship speeds. This is achieved by the superior combustion performance with the common-rail fuel injection.This system maintains the fuel injection pressure at the optimum level right across the engine speed range, ensuring optimum combustion under all operating conditions. In addition, a selective shut-off of single injectors at very low speeds and an optimized exhaust valve timing help to keep smoke emissions below the visible limit.Sulzer RT-flex engines also have the advantage of steady running at lower speeds than engines with mechanically-controlled injection. They can run very steadily, and without smoking, at 10-12% of nominal speed, which for the RT-flex 60C is about 10-14rpm. This is made possible by the precise control of injection, together with the higher injection pressures achieved at low speed, and the sequential shut-off injectors.75.According to above massage, the advantage of common-rail injection is______.A. smokeless operationB. shockless operationC. noiseless operationD. no vibration operation76.According to above massage, RT-flex engine can optimize______.① fuel injection pressure② combustion ③ exhaust valve timingA.①②B. ①②③C..③D. ②77.The key feature of the Sulzer RT-flex system is that it gives complete freedom in the _____ andoperation of fuel injection and exhaust valve actuation.A. meteringB. timingC. controlD. using78.The RT-flex engine can run at very low speed, this is made possible by following things except_______.A. the precise control of injectionB. the higher injection pressuresC. the optimized exhaust valve timingD. the sequential shut-off injectors 三、中译英（共2题，请将答案写在答题纸上）79、（轮机日志）上午10时30分，由于不明原因运行中NO.1发电机跳闸，导致全船失电,NO.2发电机自动起动恢复正常供电。