轮机英语39期805试题

中华人民共和国海事局2006年第1期海船船员适任证书全国统考试题(总第39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 rotating range of the low speed diesel engine is usually lower than ______.A. 100 rpmB. 200 rpmC. 300 rpmD. 500 rpm2.Which of the following conditions may need to be reduced when operating a large, low-speed,main propulsion, diesel engine at low loads?A. Injection pressures.B. Control air supply pressure.C. Cooling water flow through after-coolers.D. Lube oil temperature.3.Suppose the rated capacity of the main engine of a ship is 10,000 KW. at 100 rated rpm, thenwhen at 80 rpm its capacity should be ______.A. 800 KWB. 5120 KWC. 6400 KWD. 4180 KW4.Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote meansof stopping the machinery from ______.A. within the space concernedB. outside the space concernedC. the throttle stationD. within the fire room5.Excessive clearances in the main or crank-pin bearings will sometimes be indicated by ______before any bearing knock is heard.A. loss of flow in the fuel systemB. loss of pressure in the air systemC. loss of flow in the lubricating systemD. loss of pressure in the lubricating system6.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（显著的） change in temperature.D. The viscosity of the oil increases with an increase in temperature.7.The lubricating pipes and ducts should be blown out with ______.A. the atmosphereB. the fresh waterC. the compressed airD. the chemical compounds8.______, remedies must be taken to stop it as early as possible.A. Any surge occursB. Any surge occurredC. Should any surge occurD. Should any surge occurring 9.Which of the following conditions can cause above normal air temperature to develop in theintake manifold of a four-stroke/cycle, turbo-charged, diesel engine?A. Clogged air intake filters.B. Piston blow-by.C. A defective after-cooler.D. Faulty exhaust valves.10.The power generated in the turbine must ______that required by the compressor.A. be less thanB. be larger thanC. be as large asD. not be so large as11.When the propeller blades are integral with the hub, the propeller is called a ______.A. built up propellerB. solid propellerC. controllable pitch propellerD. suction back propeller12.The most important factor in engine performance is the actual power output at the end of thecrankshaft available for doing work. This is known as ______.A. indicated horsepowerB.brake horsepowerC. net horsepowerD. friction horsepower13.Grind the ______.A. keywayB. shaftC. packingD. valve14.In a ______the center screw is driven and the outer screws idle.A. single screw pumpB. double-screw pumpC. triple screw pumpD. centripetal pump15.Which of the following pumps belongs to centrifugal pump?A. reciprocating pumpB. screw pumpC. diffuser pumpD. water-ring pump16.During compressor’s running the accumulated moisture in the separators must be______.A. drained offB. collectedC. sent to the crankcasesD. separated with oil17.The emergency bilge suction valve is typically used ______.A. to inject cleaning additives when the bilges are extremely dirtyB. when the main condenser becomes fouled, in order to provide additional cooling watercirculationC. to connect the rose box to the independent bilge suctionD. if the bilges become flooded and they can not be emptied by any other means18.The valve best suited for throttling gas or liquid flow in a pipeline is the ______.A. gate valveB. globe valveC. check valveD. plug cock19.The clutch band of a constant tensioning mooring winch must be set up tight enough to drive thewinch drum and should slip only when ______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retrieved at the maximum rate20.Improper maintenance of an automatic auxiliary boiler oil burner could result in ______.A. fuel pump failureB. fan motor failureC. increased feed-water consumptionD. decreased boiler efficiency21.For proper operation, auxiliary boiler feed water must have which of the following characteristics?A. High oxygen concentration.B. Low pH.C. Proper alkalinity.D. All of the above.22.The ______has a water damp ring.A. purifierB. oil/water separatorC. incineratorD. distiller23.The operating water is supplied under the ______of an oil separator.A. sliding bowl bottomB. bowl hoodC. bowlD. filter units24.An oil water monitor is required in order to measure ______.A. the oil content in waterB. the water content in fuel oilC. the water level in bilge wellD. the oil level in bilge well25.Here some oil in the oily water separator, as a result of its lower ______, will separate and riseinto the oil collection space.A. temperatureB. viscosityC. densityD. velocity26.If an oil spill occurs on deck, you should ______.A. cover the area with foamB. cover the area with absorbent materialC. wash down immediately with a fire hoseD. wash down immediately with an oil dispersing solvent27.______are used for cargo handling.A. CranesB. Mooring winchesC. WindlassesD. Foreman28.Steering gears can be arranged with hydraulic control equipment known as a "______", or withelectrical control equipment.A. telemeterB. telemanometerC. telemotorD. telemometer29.In the hydraulic system, _____ is the power unit.A. oil pumpB. control valveC. hydraulic motorD. fittings30.With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped outby ______.A. a brine pumpB. an air ejectorC. a feed pumpD. distillate pump31.When a flash-type evaporator is to be secured for an extended period of time, the entire unitshould be drained, cleaned, and ______.A. completely filled with saltwaterB. filled with de-scaling compoundC. tightly closed to exclude airD. vented to the atmosphere32.The starting air bottle should be pumped up to maximum pressure by the ______before start of theengine.A. air compressorB. refrigeration compressorC. vacuum pumpD. purifier33.Sludge may form in the crankcase of an air conditioning compressor as a result of ______.A. bubbling refrigerantB. overheating and oxidationC. lowered operating temperaturesD. reducing the cloud or flash point34.The temperature differential occurring between the inlet temperature of the fluid to be cooled andthe outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?A. CrossB. ParallelC. CounterD. Circular35.Zinc rods are installed in the refrigeration system ______.A. liquid strainerB. liquid receiverC. saltwater condenserD. evaporator36.In extreme weather conditions, either hot or cold, control of the air conditioning plant presents______difficulties.A. fewB. littleC. a littleD. less37.The temperature at which water vapor in the atmosphere begins to condense is called the ______.A. dew point temperatureB. condensation temperatureC. psychometric temperatureD. absolute humidity temperature38.When securing an AC generator, you should FIRST ______.A. open the generator circuit breakerB. switch the voltage regulator to ‘ manual'C. decrease the field excitation to minimumD. reduce the load on the unit39.A constant output voltage from an AC generator is maintained by the ______.A. prime mover governorB. exciter generatorC. voltage regulatorD. reverse power relay40.The flame safeguard control system of a large automatic auxiliary boiler will provide fuel shut offin the case of high ____________.A. waterB. voltageC. fuel pressureD. steam pressure41.For the proper control of the air temperature in an air conditioning system using chilled watercirculation, which of the listed conditions should remain constant regardless of load changes?A. Chilled water system supply temperature.B. Chilled water system return temperature.C. Compressor discharge temperature.D. Compressor suction pressure..ually the panels are interlocked with ______so that the devices can be made dead before thedoors are opened.A. protective earthB. isolatorsC. ground switchD. circuit-breakers43.______is the actual value of the controlled condition.A. Desired valueB. Set valueC. Measured valueD. Deviation44.The most common method of dealing with spilled oil on the water is the use of ______.A. strawB. boomsC. skimmersD. chemical dispersants45.A manometer is used to measure ______.A. pressureB. temperatureC. volumeD. specific gravity46.An ohmmeter can be used to measure ______.A. current flow in a circuitB. voltage between two points in a circuitC. circuit continuityD. power47.The electrolyte in a lead-acid storage battery consists of distilled water and ______.A. hydrogen chlorideB. calcium chlorideC. sulfuric acidD. muriatic acid48.Remote control means that______.A. the system is manned manuallyB. the system is situated remotely from the operatorC. the system is controlled automaticallyD. all the above49.Electrically operated safety devices on auxiliary diesel engines function to stop the engine by______.A. increasing the volume of intake airB. shutting off the fuel supplyC. increasing the engine back pressureD. over-speeding the engine50.Which of the materials listed is used as the dynamic seal material on mechanical seals installed onmost centrifugal pumps used in water service?A. CopperB. Copper and carbonC. CarbonD. Bronze51.______is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed52.Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits, maycause ______.A. low compression pressureB. increased piston wearC. increased cylinder lube oil consumptionD. poor contact between compression rings and liner53.Which of the following actions should be taken if during a routine maintenance inspection of acentrifugal pump, localized scoring on a pump shaft sleeve is detected?A. Correct the cause of the scoring and repair the sleeve or replace with a new one.B. Reassemble the unit and provide more water leak off for proper lubrication.C. Check for parallel alignment of the sleeve radial faces to the sleeve bores.D. Reassemble the unit and adjust the governor to obtain a slower speed.54.In a diesel engine, an extremely leaking exhaust valve can cause ______.A. misfiringB. pre-ignitionC. interrupted scavengingD. reduced scavenging55.Hearing a strong noise, ______at once.A. the engine stoppedB. the engine was stoppedC. he stopped the engineD. he had stopped the engine56.During the inspection, the starting air valves should be closed ______the engine from turning.A. to increaseB. to speed upC. to preventD. to reducepensated flow control, or constant flow valves are used in hydraulic systems to ______.A. compensate for major leaks in the systemB. maintain the original fluid viscosityC.allow for changes in pressure and temperature within the systemD. assure constant fluid temperature58.The bearing cap and shell are replaced and tightened up until ______.A. the “ nip ”is zeroB. the “ nap ” is zeroC. the “ gap ”is correctD. the “ clearance ” is correct59.Although lube oils used in the main lubricating service systems should have a relatively high flashpoint to avoid ignition, they can create smoke and fire hazards when they ______.A. are exposed to a vacuume in contact with extremely hot surfacesC. are reduced in temperature to just above the pour pointD. become extremely agitated or aerated60.______, the engine must be stopped immediately.A. Should knocking occurB. If knocking occurC. Should if knocking occursD. If occur knocking61.When starting a reciprocating pump, the discharge valve should be ______.A. closedB. opened fullyC. cracked openD. partly open62.Oil mist detectors are usually used on board to detect oil mist density within ______.A. the engine crankcaseB. the engin e scavenge boxesC. drain tanksD. fuel tanks 63.The resistance of electric wire will decrease as its ______.A. length increasesB. cross-sectional area increasesC. temperature increasesD. percent of metallic purities increases64.The ______is used to measure power.A. ammeterB. voltmeterC. wattmeterD. frequency meter65.The certificate for the refrigerating plant will ______soon. I’d like to extend its validation now.A. updateB. finishC. outdatedD. expire66.If the buoyant force （浮力）on a ship's hull is equal to or greater than the displacement tonnage,the ship will ______.A. require ballast added to only the port side tanksB. be down by the headC. sinkD. float67.The three basic parts of any eductor are the nozzle, the suction chamber, and the _____________.A. injectorB. compressorC.diffuserD. siphon68.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 emergency69.To maintain the down stream pressure within defined limits over a range of flow and despite anychanges in supply pressure, ______is fitted.A. a check valveB. a gate valveC. a pressure reducing valveD. a quick closing valve70.Under the provisions of applicable international conventions, ships entitled to fly the flag of aParty are subject, while in the port of a Party, to control by officers duly authorized by the Party.Ships of non-parties or below convention size shall be given ______.A. more favorable treatmentB. less favorable treatmentC. no more favorable treatmentD. the most favorable treatment71.The volatility of a liquid is the tendency of a liquid to ______.A. igniteB. explodeC. asphyxiate(窒息)D. vaporize72.During fueling operations, which of the listed precautions should be taken when topping off fueltanks?A. Reduce the pumping rate by closing the deck filling valve.B. Close all overflow valves.C. Place 5 gallon containers under all flange connections in the fuel line.D. Reduce the pumping rate and sound tanks frequently as the level rises.73.Administrations should bear in mind the significance（重要性） of ______in maintaining safetyof life and property at sea and in preventing marine pollution.A. advanced nautical equipmentB. advanced performance main enginesC. emergency equipmentD. communication and language skills74.One of the major features of the STCW95 is the adoption of a new STCW Code, to which many______have been transferred.A. safety regulationsB. technical regulationsC. minimum requirementsD. standard requirements二、关联题（每组关联题题干下有4个小题，每小题4个选项）The great majority of large CPP have their hydraulic servomotor in the hub to operate the blade palms via push rods or a crankpin-sliding block mechanism. The hydraulic servomotor is actuated by a hydraulic circuit and controlled by control valves.CPP in large vessels are usually fitted with combinatory controls on the bridge. These are single-lever controls, the single lever controlling both propeller pitch and engine speed, either through pneumatic circuits operated by cams driven by a common shaft, or by electronic means.In either case closed loop circuits are employed, so that feedback, of propeller position and of engine speed, balances off the control signal.Additional control stands are often fitted on the bridge wings. These are commonly “slaves” to the main central bridge control stand.It is usual practice to take control of both engine and CPP by separate levers in the MCR after starting machinery, switching to bridge control from the MCR before leaving harbour. It follows that the consoles housing power supplies etc. for the CPP controls are generally fitted in the MCR.75.The blade palms of a large CPP are operated by______.A.the hubB.a hydraulic servomotorC.push rodsD.a crankpin-sliding block mechanism76.Which statement is NOT correct regarding to the single-lever controls?A. One single lever controls both propeller pitch and engine speedB.Shaft driven cams are used in pneumatic circuits for single lever controlsC.Electronic means can not be used in combinatory controlsbinatory controls are single lever controls77.In the single-lever control system, ______.A.open loop circuits are employedB.propeller position and of engine speed are fed back to balance off the control signalC.shaft driven cams used in electronic circuitsD.engine speed will not control by the lever78.As a general rule, before leaving harbour, the CPP will be controlled from (by) ______.A. bridgeB.MCRC.duty officerD.the master三、中译英（共2题，请将答案写在答题纸上）79.发现主机3号缸缸盖在进气阀座附近有一约3cm的裂纹，需要用金属扣合法修补，补后需做4 kg f/ cm2的水压试验。

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中华人民共和国海事局220

中华人民共和国海事局2001年第2期海船船员适任证书全国统考试题（总第27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 term '___' refers to one complete sequence of operations required to produce power in an engine．A．diesel engine B．stroke C．cycle D．compression ratio2．Fuels of high quality with their earlier ignitions will cause higher ___ pressure in cylinders of a diesel engine．A．compression B．maximum C．rated D．oil3．It is necessary to remove _____ from the cooling water spaces to improve heat transfer．A．lime B．frost C．scar D．scale 4．The function of a lubricating oil is ___ to lubricate the running surface ___ to carry away a great deal of heat．A．not/but B．neither/nor C．either/or D．not only/but also5．Each crank is made up of two crank webs joined by a common ___ to which the bottom end bearing is fitted．A．throw B．crankshaft C．crankpin D．crosshead6．Increasing differential pressure of an oil filter indicates that ___．A．it is dirty B．it is leaky C．it has been renewed D．all the above 7．On opposite ends of a single shaft of a turboblower are a gas driven ___ and a air compressor, which are sealed each other．A．charge air receiver B．scavenging air beltC．turbine D．air cooler8．The diesel engine must be started before it can run by itself．For this purpose ___ has to be used．A． a starting system B．the starting airC． a starting operation D．A, B and C9．The compressed air is supplied by ___ to the air reservoirs．A．compressors B．forced fans C．ventilators D．generators10．A governor automatically controls engine speed by regulating ___ ．A．firing order B．fuel supply C．engine load D．oil level 11．An overspeed safety device is usually fitted to a generator engine for ___ in the event of overspeed．A．braking the crankshaft B．increasing the fuel pump settingC．cutting power off the engine D．stabilizing the ship speed12．A reduction in load on a diesel engine results in ___ of speed of the crankshaft．A．an increase B． a reduction C．an outing D．a downwards 13．Through a ___ pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers．A．positive displacement B．ejectorC．centrifugal D．air compressor14．Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid ___ pressure．A．depending on B．regardless ofC．in relative to D．because of15．The pressure head of a pump is given in the unit of ___．A．kg B．Mpa C．meter fluid column D．None of the above is true．16．The discharge flow of a reciprocating pump is ___．A．steady B．in pulsation C．continuous D．large 17．The amount of fluid delivered by a screw pump can be regulated by ___．A．throttling the pressure line B．changing the speed of the rotorC．either A or B D．None of the above is true．18．A Screw pump belongs to ___ according to its working principle．A．reciprocating pumps B．positive displacement pumpsC．centrifugal pumps D．centripetal pumps19．The furnace of a oil fired boiler should be ___ before the operating burner is lit．A．filled with water B．purgedC．cleared of air D．None of the above is true．20．The donkey boiler may be given a bottom blow ___．A．to raise water level B．when fire are securedC．to remove scum D．only while making steam21．The water level in a steaming auxiliary boiler will always ___．A．rise when the steam pressure is increasedB．remain constant as long as the feed pump operatesC．vary as the steam demand changesD．fall when the steam pressure is decreased22．If in doubt as to the true water level when a boiler is being oilfired, you should ___．A．extinguish the fire as soon as possibleB．take no measuresC．feed water to the boilerD．open the blow down valve23．Y ou should frequently compare drum-mounted and remote-reading water level indicators．___ between these have contributed to failures because of overheating through shortage of water, when a boiler was being oil-fired．A．Descriptions B．DeflectionsC．Different D．Discrepancies24．In a ___ boiler the water flows through the inside of the tubes while the hot gases pass around the outside．A．water-tube B．fire-tube C．exhaust gas D．none of the above25．The bilge main is arranged to drain any watertight compartment ______ ballast, oil or water tanks and to discharge the contents overboard．A．rather than B．other than C．in addition that D．except for 26．Emulsification of oil will occur when mixed with ___．A．water B．black oil C．ice cream D．air27．When started, a complete oily water separating unit is first filled ___．The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment．A．by oily water B．by mixed waterC．with clean water D．with dirty water28．A high rate of separation between oil and water is favored by ___．A．large size of oil globule B．low temperatureC．high viscosity D．high flow rate29．For many years marine centrifuges were designed for ___ operation, that is the machines were run for a period during which solids accumulated in the bowl．The machine was stopped when the accumulated solids began to impair its performance．A．purifying B．long period C．batch D．temporary30．For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the ___．A．lower surface B．upper surfaceC．bowl periphery D．bowl center31．Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?A．valves B．hydraulic pumpsC．hydraulic cylinders D．hydraulic motors32．External and internal leakage in hydraulic systems may be caused by ___．A．unusual vibration B．excessive worn partsC．abnormal pressure D．any of the above33．The crane is usually mounted on a pedestal to offer adequate ___ to the operator．A．time B．space C．length D．visibility 35．___ are play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit．A．check valves B．motorsC．safety valves D．reducing valve36．___ are used to handle anchors and chains．A．cargo winches B．mooring winchesC．windlasses D．cargo hatches37．Because of the reduced ___ in the vacuum boiling evaporator, some of the sea water boils as it flows through the tubes．A．temperature B．water levelC．pressure D．rate of flow38．With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped out by ___．A．distillate pump B．an air ejectorC． a feed pump D．a brine pump39．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．dispose B．dissolve C．heat D．dissipates40．The primary task of the compressed air system is to deliver the starting air necessary for ___．A．starting the M．E．B．starting the emergency electric alternatorC．driving the main turbineD．driving the turbocharger41．When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water ___．A．to cut down the amount of cooling water neededB．to prevent an excess amount of cooling water from being discharged to the bilgesC．to supply hot water to the evaporator for more economical operationD．None of the above is true42．The evaporating pressure in R22 vapor compression refrigeration plant should be ___ atmospheric．A．below B．much larger than C．equal to D．above 43．A fluid coil will ___ large quantities of heat when it changes state from a liquid to a vapor．A．release B．regenerate C．develop D．absorb44．In the process of ___,liquid changes into gas．A．evaporation B．frosting C．condensing D．compressing45．In a refrigeration plant the ___ need defrosting．A．fan B．compressor C．condenser D．evaporator46．The latent heat of evaporation is dissipated in the ___ in a compression refrigeration system．A．evaporator B．condenser C．expansion valve D．compressor34．When in operation, it is unavoidable that a small amount of oil ___ through leakage, and in order to compensate for these leaks the system is connected to a feed pump．A．escapes B．overheats C．expands D．accelerates52．The viscosity regulator controls the fuel oil temperature _____ provide oil at the correct viscosity for combustion．A．in order that B．because of C．in order to D．owing to 53．The main generators are connected to ___ ．A．distribution boards B．section boardsC．emergency switch boards D．main switch boards54．The ___ is a crystal which, under pressure, produces an electric current which varies with the pressure．A．alternator B．glass thermometerC．piezoelectric pressure transducer D．burdon tube55．The operating medium for control systems may be ___．A．compressed air B．hydraulic oilC．electricity D．all of the above56．The crankcase can not be opened ___ the parts have been cooled down．A．if B．as C．when D．unless57．With UMS, when the engine room is unwatched ___ will control the main engine．A．the bridge officer on watch B．the chief engineerC．the duty engineer D．the duty motorman58．___ systems are provided with a stand-by device which will automatically be put in use in the even of the running device failing through a fault condition．A．Alarm B．MonitoringC．Auto start-up D．None of the above59．______control system is one in which the control action is independent of the output．A．Feed back B．Negative feed back C．Close loop D．Open loop 60．The piston rings if found worn out ___ and supplied by shipchandler．A．must replace B．must to be equippedC．has to be repaired D．have to be renewed61．Which of the following would cause a diesel to have black smoke?A．too heavy oil B．water in the gas C．leaky injector D．water in the oil 62．Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible ___．A．tolerance B．discrepancy C．error D．deflection63．Wear in a cylinder liner is usually due to ___．A．friction B．abrasion C．corrosion D．all of the above 64．The ___ of the gravity disc is too big．It cause oil to flow through the water outlet．We changed the disc and no oil is found in the water outlet．A．gravity B．diameter C．circumference D．cylinder65．Air that may enter a refrigeration plant tends to collect in the ___．A．upper part of the receiver B．upper part of the condenserC．down stream end of the cooling coil D．outlet end of the condenser66．After fitting back in place the gear wheels, don't forget to ___ them．A．fulfil B．eliminate C．grease D．bend67．If a bilge pump failed to build up discharge pressure, you should check for ___．A．excessive water in the bilges B． a clogged suction strainerC．oil in the bilges D．all of the above68．Prior to any overhaul work on electric equipment, it is important to ensure the circuits are ___ ．A．live B．excited C．dead D．on line69．The third engineer took the ___ and checked the tank table in the office and recorded all relevant data, as well as calculated the bunkering．A．water level B．sump levelC．ballast tank level D．ship’s trim70．Oil Record Book Part I shall be provided to ___．A．every oil tanker B．every ship of 400 tons gross tonnage and above C．A and B D．neither A nor B71．Moisture in a D．C．motor would cause ___．A．short circuit B．speed up C．slow down D．hunting72．___ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment．A．the watch keeping personnel B．the chief engineerC．the person on a bunker barge D．the duty deck officer 73．When under maneouvring conditions with the machinery being manually operated the control unit or console should be ___．A．automatically controlled B．continuously mannedC．off power D．None of the above is true 74．According to the international regulations concerning the prevention of pollut ion of sea areas from ships, the disposal into the sea of all plastics is ___．A．welcome B．admitted in some special sea areasC．prohibited D．acceptable47．The staring current of an a．c．motor is ___ the rated current．A．the same as B．much larger than C．less than D．equals 48．The overcurrent relay ___ the motor contactor when the motor exceeds its rated current ．A．trips B．connects C．fouls D．destructs49．The operation of paralleling two alternators requires the voltages to be ___ and also in phase．A．zero B．eliminated C．different D．equal50．With a ___ load the voltage and current are in phase．A．capacitive B．purely resistance C．inductive D．none of the above 51．Oil mist detectors are usually used on board to detect oil mist density within ___ ．A．the engine crankcase B．the engine scavenge boxesC．drain tanks D．fuel tanks二．关联题（每组关联题题干下有4个小题，每小题4个选项）The usual coolant is fresh water, sea water is not used directly as a coolant because of its corrosive action．Lubricating oil is sometimes used for piston cooling since leaks into the crankcase would cause problems．In some type of engines, the pistons are also cooled with fresh water．But difficulties caused by the leakage of piston cooling water have resulted in the wide use of for piston cooling．75．The oil is used for piston cooling because____ ．A．it is difficult to avoid the leakage of piston cooling waterB．it is difficult to use fresh water for the piston coolingC．fresh water is used for piston cooling only in some type of engineD．difficulties have been caused by the leakage of piston cooling oil76．From this paragraph we can see that ____ ．A．the usual coolant for piston cooling is fresh water or lubricating oilB．the usual coolant for piston cooling is sea water or lubricating oilC．fresh water is wide used for piston coolingD．the usual coolant for piston cooling is fresh water or sea water77．Sea water is never used directly as a coolant because of ____ ．A．corrosive action of sea water．B．corrosive action of fresh water and sea water C．leakage of lubricating oil D．it is difficult to use sea water for the piston cooling 78．Which liquid is widely used as coolant of piston cooling？A．Sea water B．Fresh waterC．Lubricating oil D．Oil or sea water三．中译英（共2题，请将答案写在答题纸上）79．各系统的温度与压力已保持在正常范围内，所有辅机均处于备航状态。

大连海事轮机英语题库电子版2022

大连海事轮机英语题库电子版20221、The teacher has his students_____a composition every other week. [单选题] *A.to writeB.writtenC.writingD.write(正确答案)2、38．These workers ___________ this bridge since one year ago. [单选题] * A．buildB．are buildingC．have built (正确答案)D．built3、She _______ be here. [单选题] *A. is gladB. is so glad to(正确答案)C. am gladD. is to4、--Don’t _______ too late, or you will feel tired in class.--I won’t, Mum. [单选题] *A. call upB. wake upC. stay up(正确答案)D. get up5、79．On a ________ day you can see the city from here. [单选题] *A．warmB．busyC．shortD．clear(正确答案)6、They all choose me ______ our class monitor.（）[单选题] *A. as(正确答案)B. inC. withD. on7、( ) What she is worried __ is ____ her daughter is always addicted to chatting online./; that [单选题] *A /; thatB of thatC about that(正确答案)D about what8、The relationship between employers and employees has been studied（）. [单选题] *A. originallyB. extremelyC. violentlyD. intensively(正确答案)9、You needn’t _______ me. I’m old enough to take care of myself. [单选题] *A. worry about(正确答案)B. write downC. put awayD. wake up10、( ) ____ eye exercises ___ good __ your eyes. [单选题] *A. Doing, is, for(正确答案)B. Doing, are, forC. Do, is, forD. Do, are, at11、73．（）about the man wearing sunglasses during night that he was determined to follow him．[单选题] *A. So curious the detective wasB.So curious was the detective(正确答案)C.How curious was the detectiveD.How curious the detective was12、We can _______ some information about this city on the Internet. [单选题] *A. look up(正确答案)B. look likeC. look afterD. look forward to13、26．—Mary, is this your pen?—No, it isn't. ________ is black. [单选题] *A．MyB．IC．MeD．Mine(正确答案)14、I could ______ control my feelings and cried loudly when I heard the bad news. [单选题] *A. hardly(正确答案)B. ?reallyC. clearlyD. nearly15、The hall in our school is _____ to hold 500 people. [单选题] *A. big enough(正确答案)B. enough bigC. very smallD. very big16、--Jimmy, you are supposed to?_______ your toys now.--Yes, mom. [单选题] *A. put upB. put onC. put away(正确答案)D. put down17、_______ travelers come to visit our city every year. [单选题] *A. Hundred ofB. Hundreds of(正确答案)C. Five HundredsD. Five hundred?of18、37．It’s fun _________ a horse with your best friends on the grass. [单选题] *A．to ride (正确答案)B．ridingC．ridesD．ride19、His picture is on show in London this month. [单选题] *A. 给...看B. 展出(正确答案)C. 出示D. 上演20、The teachers don't make us wear a school uniform and we can wear _____ we like. [单选题] *A. anyB. thatC. asD. what(正确答案)21、This is _________ my father has taught me—to always face difficulties and hope for the best. [单选题] *A. howB. whichC. that(正确答案)D. what22、Be careful with the knife. You may hurt _______. [单选题] *A. himselfB. ourselvesC. myselfD. yourself(正确答案)23、66．—How much meat do you want?—________．[单选题] *A．Sorry, there isn't anyB．I can't give you anyC．Half a kilo, please(正确答案)D．Twelve yuan a kilo24、( ) _____ New York _____ London have traffic problems. [单选题] *A. All…andB. Neither….norC. Both…and(正确答案)D. Either…or25、It is reported that the fire caused serious（）to that school building. [单选题] *A. damage(正确答案)B. destroyC. harmD.hurt26、91．—Do you live in front of the big supermarket?—No. I live ________ the supermarket ________ the post office. [单选题] *A．across; fromB．next; toC．between; and(正确答案)D．near; to27、3．Shanghai is my hometown. It’s ________ China. [单选题] *A．nearB．far away fromC．to the east ofD．in the east of(正确答案)28、Galileo was ____ Italian physicist and astronomer who invented _____ telescope. [单选题] *A. a, aB. the, theC. an, aD. an, the(正确答案)29、Simon does not（）his fellow workers because they often argue over trivial matters. [单选题] *A. get on with(正确答案)B. come up withC. do away withD. go on with30、The early Americans wanted the King to respect their rights. [单选题] *A. 统治B. 满足C. 尊重(正确答案)D. 知道。

三管轮考证轮机英语41-48期试题教材

中华人民共和国海事局2006年第3期海船船员适任证书全国统考试题(总第41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. A diesel engine is similar to a gasoline engine except that the former has no ______.A. cross-headB. spark plugC. connecting rodD. cylinder2. A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a______.A. slow-speed dieselB. medium-speed dieselC. high-speed dieselD. constant-speed diesel3.Which of the diesel engine components listed increases air density and helps to improve engine operating efficiency?A. ImpellerB. CompressorC. After-coolerD. Exhaust diffuser4.For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle dieselengine because ______.A. it has a longer power strokeB. more air gets into the cylinder each strokeC. it develops twice as many power strokes at the same speedD. higher combustion pressure is developed5.The intake valves in a diesel engine are reseated by ______.A. cam followersB. push rodsC. combustion gasesD. valve springs6.According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided into two mainsystems, namely, the constant-pressure system and ______.A. the pulse-phase systemB. the pulse Doppler systemC. the pulse systemD. the pulse interval system7.An over-speed safety device is usually fitted to a generator engine for______in the event of over-speed.A. cutting power off the engineB. increasing the fuel pump settingC. braking the crankshaftD. stabilizing the ship speed8.What preventative maintenance should be done frequently to diesel engine starting air receivers?A. Drain the accumulated moisture.B. Test the relief valves.C. Watch the temperature to prevent fluctuations in pressure.D. Clean the interior to remove oil and foreign matter.9.Immediately after any diesel engine is started, the engineer should check the ______.A. crankcase pressureB. lube oil pressureC. seawater pressureD. exhaust temperature10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears11.In motor ship, ______is often used to recover some of the heat carried in the exhaust gases from the main engine.A. an diesel oil heaterB. a waste heat boilerC. a fresh water generatorD. a donkey boiler12.An exhaust gas bypass is installed on a waste heat boiler in order to ______.A. bypass exhaust gas at high loads to prevent excessive back pressureB. bypass a portion of the exhaust gas at peak loads for better efficiencyC. recycle exhaust gas to the turbochargerD. minimize moisture condensation in the boiler gas passages at low loads13.Prior to lighting off a cold automatically fired auxiliary boiler, you should ______.A. check and regulate the water levelB. close the air cock once fires are litC. blow down the gage glassD. assure protective steam flow14.Flame failure in an automatically fired auxiliary boiler can mostly result from a/an ______.A. incorrect electrode settingB. incorrect nozzle positionC. clogged fuel nozzleD. broken high tension lead15.Waterside scale in a fire-tube boiler may cause ______.A. increased heat transferB. fireside erosionC. high steam demandD. overheated tubes16.Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating pump? I. Itsdischarge is continuous; II. It has no internal valves; III. Upon accidental closing of discharge valve, excessive pressure will not build upA. I, IIB. II, IIIC. I, II, IIID. II only17.Why are removable sleeves installed on centrifugal pump shafts?A. They make it easier to replace the pump shaft packing.B. They can be economically replaced as they wear out.C. They can be removed when it is necessary to lighten the weight of the pump.D. They increase the strength of the shaft.18.If one of the bilge system manifold valves does not properly seat, the ______.A. bilge well connected to that valve, plus the second bilge well being pumped will be completelyemptiedB. bilge system will lose vacuum and prevent the other bilges from being pumped outC. bilge well aft connected to that valve will siphon(虹吸) its contents to the forward bilge wellsD. discharge pressure will be too high.19.Which of the listed statements is correct concerning the starting of centrifugal pumps?A. They should always be started with the discharge valve closed.B. They should always be started with the discharge valve opened.C. A priming pump is always required to flood the impeller suction.D. They should always be started with the sealing line valves closed.20.The simplest method to use for determining if a centrifugal pump is operating as designed, is to ______.A. closely observe the pump discharge temperatureB. close off the discharge valve, and watch for a rise in pressureC. momentarily close off the suction valve, and watch for a rise in pressureD. use a clamp on ammeter and compare the readings to past records21.Which of the following modes of heat transfer does NOT require any physical contact between a warmer and acooler substance?A. RadiationB. ConductionC. Natural convectionD. Contact directly22. A re-heater in an air conditioning system functions to ______.A. control inlet air temperatureB. control inlet air volumeC. maintain relative humidity at 15%D. restore conditioned air temperature to a comfortable level23.In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primaryrefrigerant can be increased by ______.A. increasing refrigerant pressure in the coilB. increasing chilled water flow through the coolerC. sub-cooling the refrigerant in the condenserD. superheating the refrigerant in the compressor24.Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of______.A. wax precipitation in the lube oilB. contamination by dust, scale, or moistureC. refrigerant bubbles in the lube oilD. refrigerant reducing the lube oil viscosity25.Placing a filter on the ______of an oily water separator will “polish” the discharge but overloading must be avoided.A. suction sideB. discharge sideC. by-pass pipeD. sampling pipe26.When started, a complete oily water separating unit is first filled ______.The oily water mixture is then pumpedthrough 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 ______is used to burn oil sludge.A. clarifierB. oil/water separatorC. incineratorD. distiller29.Most marine biological sewage treatment plants consist of all the following statements except ______.A. aeration tanksB. settling tanksC. disinfection agent （消毒剂）D. anaerobic bacteria (厌氧菌)30.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 surface31.The ______of the gravity disc is too big. It cause oil to flow through the water outlet. We changed the disc and nooil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder32.The advantages of flash type evaporators, as compared to submerged tube type evaporators, include ______.A. less internal corrosion because of lower brine densityB. higher temperature evaporation for lower salinity of the distillate producedC. less scale formation in a flash evaporatorD. less feed-water required for a flash evaporator33.Distilled water from an evaporator may be discharged into a drinking water tank ______.A. through a detachable hose connectionB. after passing through an activated charcoal filterC. after chemical analysis shows it is fit for consumptionD. through a solenoid operated three-way valve34.What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve35.In a radial piston pump, reversal and control of fluid flow are accomplished by moving the ______.A. central valveB. radial plungerC. floating ringD. cylinder body36.In a general cargo crane, ______is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. the fan moter37.______are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches38.The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum andshould slip only when ______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retrieved at the maximum rate39.Dual (双的)electro-hydraulic steering units usually operate ______.A. with both pumps on line at the same time B．with one pump on standbyC．with the follow-up gear disconnected D．only when the rudder is moved amidships40.One factor that determines the frequency of an alternator is the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage41.An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship asa ______.A. magnetic amplifierB. ship's service alternatorC. three-wire DC generatorD. saturable core reactor42.Current changing in direction and rising and falling in value is ___ .A. D.C.B. A.C. C. generatorD. fresh watergenerator43.Equal power factors on paralleled AC generators are maintained by an automatic ______.A. voltage regulatorB. reverse power relayC. reverse current relayD. governor control switch44.______shall be continuously powered and shall have an automatic changeover to a stand by power supply in case ofloss of normal power supply .A. Cooling systemB. Alarm systemC. The air conditioning installationD. The mooring equipment45.Switchboards may be of the dead-front type in which all live parts are installed behind ______and only theoperation handles and instruments are on the frontA. the capstanB. the collectorC. the panelsD. the surface46.The emergency generator or emergency battery is connected to ______on most ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards47.The primary function of an electric motor is to ______.A. develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance48.Electrical leads and insulation on a motor should be painted with ______.A. heat-resisting acrylicB. heat-resisting aluminumC. insulating varnishD. insulating white lead49. 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. should short the circuit when overloaded50.Electric circuits are protected against short circuits by means of a/an _______.A. diode(二极管)B. amplifierC. circuit breakerD. capacitor51.The electrolyte in a lead-acid storage battery consists of distilled water and ______.A. hydrogen chlorideB. calcium chlorideC. sulfuric acidD. muriatic acid52.When under maneuvering conditions with the machinery being manually operated the control unit or console shouldbe ___.A. automatically controlledB. off powerC. continuously mannedD. continuously unmanned53.______is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed54.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. running55. A tank which has been sealed for a long period of time can be dangerous because ______.A. steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous vapors in the presence of moisture56. A class 'C' fire is burning ______.A. diesel oilB. magnesiumC. dunnageD. electrical insulation57.To prevent the spread of fire by conduction, you should ______.A. close all openings to the areaB. remove combustibles from direct exposureC. cool the bulkheads around the fireD. shut off all electric power58.The lengthening of a crack formed in the shell plating of a ship may be prevented by ______.A. welding brackets across both ends of the crackB. chipping out and slot welding the entire crackC. drilling a hole at each end of the crackD. cutting a square notch at each end of the crack59.After a fire has been extinguished in a closed space, personnel may safely enter the space when ______.A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment'sentranceB. a lifeline and explosion proof flash light are usedC. all smoke and toxic fumes are removed and an adequate oxygen supply is presentD. overhaul has been completed to remove any possible source of re-ignition60.While loading bunkers, you notice oil on the water near the vessel. What should you do first?A. Stop loadingB. Notify the harbor administration.C. Determine if the vessel is the source of the pollution.D. Start the main engine and put them in gear to disperse the spill.61.To anneal (退火)a copper gasket, you should heat the gasket _______.A. and quench it in oilB. cherry red and quench in waterC. and let it cool slowly in the airD. and carbonize it62.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 that personnel are watching atengine assembly control station and monitoring all machinery and electronic devices.A. BRCB. MCCC. AUT-0D. AUT-164.Which of the following operations must be entered on the Oil Record Book Part I?I. Routine discharge at sea of bilge water containing oil from the machinery spacesII. Bunkering of fuel oilA. I onlyB. II onlyC. both I and IID. neither I nor II65.Your ship’s certificates show that you did not do renewing work for certificate. All certificates have expired a fewdays before. Thus, your ship is ______.It follows therefore that she will ______.A. seaworthy / be fined in our portB. un-seaworthy/ be disassembled in our portC. seaworthy / be assembled in our portD. un-seaworthy / be detained in our port66.“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a ______.A. substandard shipB. standard shipC. over-standard shipD. reference ship67.When deciding the composition of the engineering watch, which may include _____appropriately, many factorsshall be taken into account.A. satisfied engineersB. qualified ratingsC. satisfied chief engineerD. qualified chief engineer68.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 ma chinery spaces that may cause reduction in ship’sspeedC. when isolating and bypassing machinery to be worked onD. co-operating with any engineer in charge of maintenance work69.At an unsheltered anchorage the chief engineer shall consult with ______whether or not to maintain an underwaywatch.A. the engineer officer in charge of watchB. the deck officer in charge of watchC. the masterD. the chief mate70.The term "moderate speed" was previously interpreted as meaning a speed which would enable a vessel______within half the range of visibility.A. stoppingB. being stoppedC. to stopD. to be stopped71.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.A. skimmersB. strawC. dispersantsD. sawdust72.The SOLAS Convention in its successive forms is generally regarded as the most important of all internationaltreaties concerning the ______ of merchant ships.A. pollutionB. economizationC. efficiencyD. safety73.The Company should ensure that the master is fully ______with the Company's SMS.A. familiarB. understandC. conversationD. confused74.______means the level for which minimum appropriate protective security measures shall be maintained at all times,threats and exchanging such information with appropriate Contracting Governments.A. Security level 1B. Security level 2C. Security level 3D. Security level 4二. 关联题（关联题题干下有4个小题，每小题4个选项）With many small package boilers, the automatic control sequence usually ensures that the boiler fire is initially ignited from a diesel oil supply, and changed over to the usual source when ignition is completed. With good management, to facilitate subsequent starting from cold, the fuel system of large boilers will have been flushed through with diesel oil when the boiler was on light duty immediately prior to being secured. When burning such diesel fuel it is essential for safety that only the correct (small) burner tip should be used. It should be kept in mind that if fire does not light, immediately shut off fuel and vent furnace.Complete ignition of fuel in the furnace is essential. The burner flame, the smoke indicator and the funnel should be frequently observed. With satisfactory combustion, the flame should appear in candescent （白热的）with an orange shade at the flame tip, and a faint brownish haze should show at the funnel. If on first ignition the flame is uncertain, badly shaped and separates from the primary swirler, momentary opening or closing of air register may correct.75. Small package boilers will use _______ while being lit up.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil76. After large boilers being secured, the fuel in the feeding line will be____.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil77. If large boilers were not lit up, _____.A. feed water to normal levelB. stop fuel supply immediately and purge the furnaceC. light the boiler againD. reset the burner78. An indication for a good combustion is ______.A. white smokeB. brown haze in the funnelC. orange flame tipD. swirl oil spray三、中译英（共2题，请将答案写在答题纸上）79. 船舶加油期间，如发现船舶附近水面有油或发生溢油事故，都应立即停止加油作业。

轮机英语题库中文版

轮机英语题库中文翻译及解释1. 加油结束后，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”意“使发动机准备起动”。

3. “机座”是发动机的基础，没有它的支承，特别是轴的对中和发动机的整体结构将无法保证。

4. 在机械一液压式调速器中，感应发动机速度的部件是“飞重”。

5. 直列式和V型发动机的机架上一般都有维修通道（导门）。

6. 回流扫气中，扫气空气（温度较低）和废气（温度较高）经过相邻的气口，带来缸套材料的温差问题。

7. 十字头销变椭圆了，需要光车。

8. 联锁装置可用来防止在发动机换向完成前启动空气进入到气缸。

9. 燃油和滑油在进入发动机之前，都需要经过处理。

10. 滑油用作活塞冷却的一个好处是漏到曲柄箱不会产生污染问题。

11. 通过吹入新鲜空气去除废气的过程叫“扫气”。

A项意“气体交换”；B项意“充气”；D项意“增压”。

12. 用作气缸和气缸头冷却的是淡水。

13. 发动机运行过程中功率下降或失速的第一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字架的顶部有加强的铸铁架称为扫气箱。

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其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. 与第20题重复。

22. 在压缩冲程初将含有大量空气并且将能燃烧大量燃油。

选项中，较合理的答案只能是A。

更好的答案应该是“At the end of the compression stroke”。

意即“在压缩冲程结束时，气缸中有大量的空气并能燃烧大量的燃油”。

23. 增压压力越高，发动机发出的功率也就越大。

24. 与第8题重复。

25. 燃油喷射泵没有正确调定，引起发火过早或过晚。

轮机英语关联题题库最新整理九十一篇(带翻译)

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。

轮机英语历年真题文档

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. A diesel engine is similar to a gasoline engine except that the former has no ______.A. cross-headB. spark plugC. connecting rodD. cylinder2. A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, iscommonly classed as a ______.A. slow-speed dieselB. medium-speed dieselC. high-speed dieselD. constant-speed diesel3.Which of the diesel engine components listed increases air density and helps to improve engineoperating efficiency?A. ImpellerB. CompressorC. After-coolerD. Exhaust diffuser4.For a given size engine, the two-stroke/cycle diesel engine will deliver more power than afour-stroke/cycle diesel engine because ______.A. it has a longer power strokeB. more air gets into the cylinder each strokeC. it develops twice as many power strokes at the same speedD. higher combustion pressure is developed5.The intake valves in a diesel engine are reseated by ______.A. cam followersB. push rodsC. combustion gasesD. valve springs6.According to the way the energy of the exhaust gases is utilized, pressure-charging can be dividedinto two main systems, namely, the constant-pressure system and ______.A. the pulse-phase systemB. the pulse Doppler systemC. the pulse systemD. the pulse interval system7.An over-speed safety device is usually fitted to a generator engine for______in the event ofover-speed.A. cutting power off the engineB. increasing the fuel pump settingC. braking the crankshaftD. stabilizing the ship speed8.What preventative maintenance should be done frequently to diesel engine starting air receivers?A. Drain the accumulated moisture.B. Test the relief valves.C. Watch the temperature to prevent fluctuations in pressure.D. Clean the interior to remove oil and foreign matter.9.Immediately after any diesel engine is started, the engineer should check the ______.A. crankcase pressureB. lube oil pressureC. seawater pressureD. exhausttemperature 10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.A. friction clutchesB. disconnect clutchesC. reversing gearsD. reduction gears11.In motor ship, ______is often used to recover some of the heat carried in the exhaust gases fromthe main engine.A. an diesel oil heaterB. a waste heat boilerC. a fresh water generatorD. a donkeyboiler12.An exhaust gas bypass is installed on a waste heat boiler in order to ______.A. bypass exhaust gas at high loads to prevent excessive back pressureB. bypass a portion of the exhaust gas at peak loads for better efficiencyC. recycle exhaust gas to the turbochargerD. minimize moisture condensation in the boiler gas passages at low loads13.Prior to lighting off a cold automatically fired auxiliary boiler, you should ______.A. check and regulate the water levelB. close the air cock once fires are litC. blow down the gage glassD. assure protective steam flow14.Flame failure in an automatically fired auxiliary boiler can mostly result from a/an ______.A. incorrect electrode settingB. incorrect nozzle positionC. clogged fuel nozzleD. broken high tension lead15.Waterside scale in a fire-tube boiler may cause ______.A. increased heat transferB. fireside erosionC. high steam demandD. overheatedtubes16.Which of the following will be the advantage of a centrifugal pump as compared with areciprocating pump? I. Its discharge is continuous; II. It has no internal valves; III. Uponaccidental closing of discharge valve, excessive pressure will not build upA. I, IIB. II, IIIC. I, II, IIID. II only17.Why are removable sleeves installed on centrifugal pump shafts?A. They make it easier to replace the pump shaft packing.B. They can be economically replaced as they wear out.C. They can be removed when it is necessary to lighten the weight of the pump.D. They increase the strength of the shaft.18.If one of the bilge system manifold valves does not properly seat, the ______.A. bilge well connected to that valve, plus the second bilge well being pumped will be completelyemptiedB. bilge system will lose vacuum and prevent the other bilges from being pumped outC. bilge well aft connected to that valve will siphon(虹吸) its contents to the forward bilge wellsD. discharge pressure will be too high.19.Which of the listed statements is correct concerning the starting of centrifugal pumps?A. They should always be started with the discharge valve closed.B. They should always be started with the discharge valve opened.C. A priming pump is always required to flood the impeller suction.D. They should always be started with the sealing line valves closed.20.The simplest method to use for determining if a centrifugal pump is operating as designed, is to______.A. closely observe the pump discharge temperatureB. close off the discharge valve, and watch for a rise in pressureC. momentarily close off the suction valve, and watch for a rise in pressureD. use a clamp on ammeter and compare the readings to past records21.Which of the following modes of heat transfer does NOT require any physical contact between awarmer and a cooler substance?A. RadiationB. ConductionC. Natural convectionD. Contact directly22. A re-heater in an air conditioning system functions to ______.A. control inlet air temperatureB. control inlet air volumeC. maintain relative humidity at 15%D. restore conditioned air temperature to a comfortable level23.In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effectof the primary refrigerant can be increased by ______.A. increasing refrigerant pressure in the coilB. increasing chilled water flow through the coolerC. sub-cooling the refrigerant in the condenserD. superheating the refrigerant in the compressor24.Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressoras a result of ______.A. wax precipitation in the lube oilB. contamination by dust, scale, or moistureC. refrigerant bubbles in the lube oilD. refrigerant reducing the lube oil viscosity25.Placing a filter on the ______of an oily water separator will “polish” the discharge butoverloading must be avoided.A. suction sideB. discharge sideC. by-pass pipeD. sampling pipe26.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 ______is used to burn oil sludge.A. clarifierB. oil/water separatorC. incineratorD. distiller29.Most marine biological sewage treatment plants consist of all the following statements except______.A. aeration tanksB. settling tanksC. disinfection agent （消毒剂）D. anaerobic bacteria (厌氧菌)30.For a purifier changing to a gravity disc with smaller hole diameter will move the interfacetowards the ______.A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface31.The ______of the gravity disc is too big. It cause oil to flow through the water outlet. Wechanged the disc and no oil is found in the water outlet.A. gravityB. diameterC. circumferenceD. cylinder32.The advantages of flash type evaporators, as compared to submerged tube type evaporators,include ______.A. less internal corrosion because of lower brine densityB. higher temperature evaporation for lower salinity of the distillate producedC. less scale formation in a flash evaporatorD. less feed-water required for a flash evaporator33.Distilled water from an evaporator may be discharged into a drinking water tank ______.A. through a detachable hose connectionB. after passing through an activated charcoal filterC. after chemical analysis shows it is fit for consumptionD. through a solenoid operated three-way valve34.What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve35.In a radial piston pump, reversal and control of fluid flow are accomplished by moving the______.A. central valveB. radial plungerC. floating ringD. cylinderbody36.In a general cargo crane, ______is fitted to lift the cargo load.A. the slewing motorB. the luffing motorC. the hoisting motorD. the fan moter37.______are used to handle anchors and chains.A. Cargo winchesB. Mooring winchesC. WindlassesD. Cargo hatches38.The clutch band of a constant tensioning mooring winch must be set up tight enough to drive thewinch drum and should slip only when ______.A. excessive loads are placed on the winchB. minimum pull is being exerted by the winchC. automatic operation of the winch is desiredD. wire is being retrieved at the maximum rate39.Dual (双的)electro-hydraulic steering units usually operate ______.A. with both pumps on line at the same time B．with one pump on standbyC．with the follow-up gear disconnected D．only when the rudder is moved amidships40.One factor that determines the frequency of an alternator is the ______.A. number of turns of wire in the armature coilB. number of magnetic polesC. strength of the magnets usedD. output voltage41.An electrical device which employs a stationary armature and a rotating electromagnetic field isused aboard ship as a ______.A. magnetic amplifierB. ship's service alternatorC. three-wire DC generatorD. saturable core reactor42.Current changing in direction and rising and falling in value is ___ .A. D.C.B. A.C. C. generatorD.fresh water generator43.Equal power factors on paralleled AC generators are maintained by an automatic ______.A. voltage regulatorB. reverse power relayC. reverse current relayD. governor control switch44.______shall be continuously powered and shall have an automatic changeover to a stand bypower supply in case of loss of normal power supply .A. Cooling systemB. Alarm systemC. The air conditioning installationD. The mooring equipment45.Switchboards may be of the dead-front type in which all live parts are installed behind ______andonly the operation handles and instruments are on the frontA. the capstanB. the collectorC. the panelsD. the surface46.The emergency generator or emergency battery is connected to ______on most ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards47.The primary function of an electric motor is to ______.A. develop torqueB. generate high voltagesC. produce a magnetic fieldD. generate high electrical resistance48.Electrical leads and insulation on a motor should be painted with ______.A. heat-resisting acrylicB. heat-resisting aluminumC. insulating varnishD. insulating white lead49. 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. should short the circuit when overloaded50.Electric circuits are protected against short circuits by means of a/an _______.A. diode(二极管)B. amplifierC. circuit breakerD. capacitor51.The electrolyte in a lead-acid storage battery consists of distilled water and ______.A. hydrogen chlorideB. calcium chlorideC. sulfuric acidD. muriatic acid52.When under maneuvering conditions with the machinery being manually operated the control unitor console should be ___.A. automatically controlledB. off powerC. continuously mannedD. continuously unmanned53.______is a precaution which contributes to avoiding trouble under normal operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed54.After “F.W.E.” is given, the air system is shut down, the ______gear put in, all drains andindicator cocks opened, and the cooling water kept running.A. steeringB. timingC. turningD. running55. A tank which has been sealed for a long period of time can be dangerous because ______.A. steel surfaces consume oxygen by rustingB. sealed tanks usually form a vacuumC. moisture condenses in the tank, displacing the oxygenD. most tank coatings give off poisonous vapors in the presence of moisture56. A class 'C' fire is burning ______.A. diesel oilB. magnesiumC. dunnageD. electrical insulation57.To prevent the spread of fire by conduction, you should ______.A. close all openings to the areaB. remove combustibles from direct exposureC. cool the bulkheads around the fireD. shut off all electric power58.The lengthening of a crack formed in the shell plating of a ship may be prevented by ______.A. welding brackets across both ends of the crackB. chipping out and slot welding the entire crackC. drilling a hole at each end of the crackD. cutting a square notch at each end of the crack59.After a fire has been extinguished in a closed space, personnel may safely enter the space when______.A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment'sentranceB. a lifeline and explosion proof flash light are usedC. all smoke and toxic fumes are removed and an adequate oxygen supply is presentD. overhaul has been completed to remove any possible source of re-ignition60.While loading bunkers, you notice oil on the water near the vessel. What should you do first?A. Stop loadingB. Notify the harbor administration.C. Determine if the vessel is the source of the pollution.D. Start the main engine and put them in gear to disperse the spill.61.To anneal (退火)a copper gasket, you should heat the gasket _______.A. and quench it in oilB. cherry red and quench in waterC. and let it cool slowly in the airD. and carbonize it62.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 thatpersonnel are watching at engine assembly control station and monitoring all machinery and electronic devices.A. BRCB. MCCC. AUT-0D. AUT-164.Which of the following operations must be entered on the Oil Record Book Part I?I. Routine discharge at sea of bilge water containing oil from the machinery spacesII. Bunkering of fuel oilA. I onlyB. II onlyC. both I and IID. neither I nor II65.Your ship‟s certificat es show that you did not do renewing work for certificate. All certificateshave expired a few days before. Thus, your ship is ______.It follows therefore that she will______.A. seaworthy / be fined in our portB. un-seaworthy/ be disassembled in our portC. seaworthy / be assembled in our portD. un-seaworthy / be detained in our port66.“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a______.A. substandard shipB. standard shipC. over-standard shipD. reference ship67.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.The officer in charge of the engineering watch shall notify the chief engineer withoutdelay______.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‟sspeedC. when isolating and bypassing machinery to be worked onD. co-operating with any engineer in charge of maintenance work69.At an unsheltered anchorage the chief engineer shall consult with ______whether or not tomaintain an underway watch.A. the engineer officer in charge of watchB. the deck officer in charge of watchC. the masterD. the chief mate70.The term "moderate speed" was previously interpreted as meaning a speed which would enable avessel ______within half the range of visibility.A. stoppingB. being stoppedC. to stopD. to be stopped71.One of the methods NOT usually allowed in cleaning up oil spills in the United States is ______.A. skimmersB. strawC. dispersantsD. sawdust72.The SOLAS Convention in its successive forms is generally regarded as the most important of allinternational treaties concerning the ______ of merchant ships.A. pollutionB. economizationC. efficiencyD. safety73.The Company should ensure that the master is fully ______with the Company's SMS.A. familiarB. understandC. conversationD. confused74.______means the level for which minimum appropriate protective security measures shall bemaintained at all times, threats and exchanging such information with appropriate Contracting Governments.A. Security level 1B. Security level 2C. Security level 3D. Security level 4二. 关联题（关联题题干下有4个小题，每小题4个选项）With many small package boilers, the automatic control sequence usually ensures that the boiler fire is initially ignited from a diesel oil supply, and changed over to the usual source when ignition is completed. With good management, to facilitate subsequent starting from cold, the fuel system of large boilers will have been flushed through with diesel oil when the boiler was on light duty immediately prior to being secured. When burning such diesel fuel it is essential for safety that only the correct (small) burner tip should be used. It should be kept in mind that if fire does not light, immediately shut off fuel and vent furnace.Complete ignition of fuel in the furnace is essential. The burner flame, the smoke indicator and the funnel should be frequently observed. With satisfactory combustion, the flame should appear in candescent （白热的）with an orange shade at the flame tip, and a faint brownish haze should show at the funnel. If on first ignition the flame is uncertain, badly shaped and separates from the primary swirler, momentary opening or closing of air register may correct. 75. Small package boilers will use _______ while being lit up.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil76. After large boilers being secured, the fuel in the feeding line will be____.A. the usual source of oilB. fuel oilC. diesel oilD. mixture of fuel oil and diesel oil77. If large boilers were not lit up, _____.A. feed water to normal levelB. stop fuel supply immediately and purge the furnaceC. light the boiler againD. reset the burner78. An indication for a good combustion is ______.A. white smokeB. brown haze in the funnelC. orange flame tipD. swirl oil spray三、中译英（共2题，请将答案写在答题纸上）79. 船舶加油期间，如发现船舶附近水面有油或发生溢油事故，都应立即停止加油作业。

轮机英语48805带答案

中华人民共和国海事局2009年第5期海船船员适任统考试题（总第48期）科目：轮机英语试卷代号：805一、单项选择题1. Diesel engines classified as reciprocating internal combustion engines because they____A. use energy from fuel burned outside their cylindersB. burn fuel in a combustion chamber that moves back and forthC. burn fuel in a chamber where its energy moves a piston up and downD. a continuous combustion process to impart rotary motion to the pistons2. The abbreviation “MIP” stands for _____A. middle indication pressureB. mean indicated pressureC. mean indicated pitchD. middle indicated power3. The term used to express the ignition quality of a particular fuel is _____A. cetane numberB. octane numberC. ignition index numberD. volatility point4. The period when both inlet valves and exhaust valves are open is referred to as____A. valve loopB. valve uniflowC. valve overlapD. valve grinding5. Which of the following statements represents the function of the compression ringsinstalled at the top of a diesel engine piston?A. Control the amount of lube oil burned in the combustion chamberB. Transmit heat from the piston to the cylinder linerC. Prevent damage to ring groove inserts by action as a heat dam.D. Dissipate combustion chamber gas pressure by channeling it through the ring gap.6. The gas loads on the engine structure are constrained by means of hydraulically preloaded_____Which connect the bed plate, frame sections and cylinder jackets into a single unit.A. connecting rodsB. mean bearingC. columnD. the rods7. ______of different thickness are inserted between the shells to enable adjustment of the bearing clearness.A. ScrewsB. FilmsC. DisesD. Shims8. Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have thedisadvantages of ____A. less even torqueB. higher cylinder head temperaturesC. fewer power stroke per revolutionD. greater weight/size requirements9. During the fuel imection period, fuel pressure must exceed cylinder gas pressure to _____A. ensure penetration and distribution of the fuel in the combustion chamberB. ensure the needle valve is flushed clean during each injectionC. prevent combustion gas blowback into the open needle valveD. prevent reflected pressure waves when the needle valve closes10. The upper piston rings in large, slow-speed, two-stroke cycle diesel engines are mosteffectively lubricated by oil ____A. fed from mechanical lubricatorsB. thrown off from the main bearingsC. supplied form wick fed drip lubricatorsD. flow from a centrifugal banjo oiler11. In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchange is controlled by the _____A. section pressure regulatorB. thermostatic bypass valveC. sea water temperatureD. water level in the expansion tank12. The purpose of an after-cooler is to ______A. reduce the turbocharger operation temperatureB. increase the pressure of the inlet airC. increase the density of the inlet airD. reduce the blower operation temperature13. Compressed air is supplied by air compressors to _____A. the air receiversB. the starting valvesC. the cylinder coversD. the distributors14. _____supplies pilot air to control the cylinder air start valves.A. An air receiversB. An indicator cockC. An air distributorD. A safety valve15. Thermocouple pyrometers are used on large, main propulsion diesel engines toindicate the temperature of the ______A. cooling water leaving each cylinderB. fuel oil entering the injectorC. exhaust gases at various locationsD. lube oil at the bearing suppliers16. After starting a diesel engine, which of the listed operating conditions should bechecked first?A. Air box pressureB. Lube oil pressureC. Exhaust temperaturesD. Raw waterpressure17. A device which functions to bring a diesel engine to a full stop to protect it fromdamage is known as a/an _____A. torque limiterB. over-speed tripC. over-speed governorD. load limitgovernor18. Air cocks, usually positioned at the ______in a circulating systems, is used to get ridof the air in the system.A. bending jointB. expansion tankC. weldD. the highest point19. Some medium and high-speed diesel engines require reduction gear units to provide auseful propeller speed. In most reduction gears, the bull gear____A. must churn the oil in the sumpB. is connected to the propeller shaftC. is driven at the highest RPMD. compensates for alignment variations between the engine and pinion gear20. Which of the following statements concerning fire-tube boilers is correct?A. combustion gases flow through the tubesB. flames impinge on the tubesC. combustion occurs in the tubesD. water flows through the tubes21. A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaustsystem, may be used to avoid boiler______A. corrosion at low engine loadsB. erosion at high engine loadsC. overload at high engine loadsD. scaling at all exhaust temperature22. The amount of chlonde content in the water of an auxiliary boiler can be reduced by _____A. adding hydrazineB. blowing down the boilerC. adding phenolphthaleinD. adding a sulfite chloride scavenger23. Failure of the burner flame in an automatic auxiliary boiler would probably be a result of ______A. water in the fuel oilB. broken high tension leadsC. incorrect electrode settingD. full fuel pressure at the nozzle24. Boiler water hardness is increased by _____A. zero alkalimty to the waterB. scale forming salts in the feedwaterC. dissolved gases in the waterD. improper operation of the DS heater25. A screw pump belongs to ______according to its working principleA. recipmcating pumpsB. positive displacement pumpsC. dissolved gases in the waterD. centripetal pumps26. A centrifugal pump operating against a closed discharge valve has a/an_______A. capacity of 100%B. efficiency of 0%C. internal slippage of 0%D. shut off horsepower rating of 100%27. Before disconnecting a joint in a pipeline, you should______A. determine the size of the gasketB. hang a bucket under the jointC. have a first aid kit on handD. be sure no pressure exists in the line28. It is possible to mount a double suction centrifugal pump impeller with the vanesfacing in the wrong direction. This would cause the pump ______A. head capacity to improveB. discharge to be reversedC. efficiency to decreaseD. slippage to decrease29. If a centrifugal pump is driven by a constant speed electric motor and produces adischarge pressure less than designed, the cause is probably_____A. excessive pump speedB. excessive suction headC. worn wearing ringsD. gross pump misalignment30. Properties of a good refrigeration oil include_______A. low wax contentB. high pour pointC. high viscosityD. low wax content, high pour point, high viscosity31. The _____ only allows for adjustment of temperature in each room by the occupantmanually controlling the air volume admitted.A. central air conditioning systemB. high velocity systemC. low velocity systemD. single duct system32. The process of adding moisture to air to increase the relative humidity is known as______A. sublimation B desiccation C. humidification D. miniaturization33. Sludgy may form in the crankcase of an air conditioning compressor as a result of _____A. bubbling refrigerantB. overheating and oxidationC. lowered operating temperaturesD. reducing the cloud or floc point34. Which of the equipment listed is most effective in processing bilge slops for overboard dischargeA. a 100 PPM oily water separatorB. assembling the lube oil purifier as a separator and aligning it to the bilge overboardC. a 15 PPM oily water separatorD. a magnetic duplex strainer35. When started, a complete oily water separating unit is first filled _____. The oily watermixture is then pumped through the inlet pipe into the coarse separating compartment.A. with dirty waterB. with clean waterC. by oily waterD. by mixed water36. Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. incineratorD. cooler37. Concerning the incinerator’s operation, which of the following is not correct?A. scavenging time should be more than 30 seconds before ignitingB. the oil temperature of waste oil tank is 80-100℃C. first igniting the incinerator with diesel oil when the temperature of hearth is about600℃, the waste oil is drawn in.D. the ash from incinerator can be dumped into sea no distance limitation38. Bacteria which live ____are said to be aerobicA. in the presence of oxygenB. without oxygenC. in the presence of nutritionD. without nutrition39. For a purifier changing to a gravity disc with smaller hole diameter will move theinterface towards the ______A. bowl peripheryB. bowl centerC. upper surfaceD. lower surface40. To ensure lube oil purifier working in normal condition, the interval between twosludgy discharging should not exceed ____ hours.A. 2B. 4C. 5D. 641. Which of the following problems will occur if a disk-type centrifugal lube oil purifier is not properly primed prior to admitting oil flow to the bowl?A. Contamination of the lube oil by emulsification will resultB. The lube oil will not be subjected to the proper centrifugal forceC. The lube oil will overheat and flashD. Oil will discharge from the heavy phase discharge port and be wasted42. A vacuum is initially created in a flash type distilling plant by _____A. the flashing of the feed waterB. the condensation of the saltwater feedC. air ejectors, eductors, of a separate vacuum pumpD. condensation of the distillate43. On which of the following heated surfaces of a flash type evaporator would you be more likely to find soft scale formation?A. Feed-water heater internal tube surfacesB. Internal distillate cooler tubesC. Flash chamber vertical surfacesD. pressure control valve44. What type of valve is used to direct the flow of hydraulic fluid?A. relief valveB. direction control valveC. stop valveD. pressure control valve45. Another name for the “swash plate” in the variable delivery pump is _____A. tiltable discB. gravity discC. distributing discD. catch plate46. The drive motor will have a brake arranged to fail-safe, i.e. it will ___the load if powerfails or machine is stopped.A. liftB. putC. takeD. hold47. If the pump for a hydraulic anchor windlass is over heating, the cause may be_____A. increased pump speedB. excessive pump discharge pressureC. too low of a tilting box angleD. low pump speed48. When the power is shut off, the wire____A. becomes slackB. can not be paid out unless the brake is overhauled or recover wire unless manually operatedC. will be let out because the brake is out of workD. may be pay out due to no power49. An additive used to improve the ability of a lube oil to reduce friction is known as a/an ____A. suppressant additiveB. dispersant additiveC. extreme pressure additiveD. viscosity improver additive50. Strainers are commonly used in hydraulic systems to _____A. protect the pump from fine soluble contaminantsB. prevent solid particles from entering the pumpC. prevent solid particles from entering the filterD. protect the directional control valves51. Current changing in direction and rising and falling in value is ____A. A.C.B. D.C. C. generatorD. fresh water generator52. The magnetic field is provided by electromagnet, so arranged that adjacent poles have_____A. opposite polarityB. the same polarityC. negative polarityD. positive polarity53. Prior to closing the breaker when paralleling two AC. generators, the recommended practice is to have the frequency of the incoming machine_____A. slightly less than the line frequencyB. the same as the line frequencyC. slightly greater than the line frequencyD. have nothing to do with the lien frequency54. The power factor at which a paralleled A.C. generator operates is usually adjusted by the ____A. connected loadB. prime mover speedC. field excitationD. generator’s rated voltage54. 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 factor56. ______is not a part of the main switchboard on board.A. BusbarB. Load panel of main generatorC. Paralleling panelD. Shore connection box57. Usually, emergency electricity supplies to _____on boardA. cargo winchB. windlassC. steering gearD. main air compressor58. The ground terminal of a starter should be connected to _____A. the common ground pointB. the starter’s frameC. the communicatorD. the starter’s mounting bolts59. The separate supplies are connected in either star or delta formation. The starformation is most commonly used and requires ______ slip-rings on the alternator.A. twoB. threeC. fourD. five60. As a general rule, the first troubleshooting action to be taken in checking faulty electriccontrol devices is to ________A. draw a one line diagram of the circuitryB. test all fuses and measure the linevoltageC. take megger readingsD. insulate the apparatus from ground61. When measuring AC current flow, you must always connect the meter ______A. in series with the power source and loadB. in parallel with the power source and loadC. insuring correct polarityD. using the lowest range possible to prevent instrument damage62. If a small electric motor is immersed in salt water it should be＿＿＿＿.Ⅰ. washedwith free water;Ⅱ.dried in an ovenA. only ⅠB. only ⅡC. both Ⅰand ⅡD. neitherⅠnor Ⅱ63. “AMIDSHIPS”refers to ________A. back of vesselB. the middle portion of a shipC. a backward movement of a vesselD. across the ship, at right angles to the fore-and-aft centerline64.______is the main cause to the damage of engine parts and excess wearingA. overloadB. the odds of the loadC. the default of engine partsD. overload and the odds of the load65. After “finished with engine”, which of the following cannot be shut off by the dutyengineer?A. fuel oil booster pumpB. the main starting valveC. the sea chestD. the main cooling sea water pump66. Which of the following is NOT a recommended safe practice?A. Securing equipment against slipping or driftingB. Operating machinery at its recommended speedC. Repairing loose handles on tools before usingD. Using tools for purposes for which they are not designed67. A class “C” fire would occur in _____A. beddingB. pipe insulationC. paintD. a generator68. If a fire occurs in the boiler room as a result of a leaking fuel line, you shouldFIRST______A. notify the engineer on watchB. isolate and secure the pipingC. throw sand on the fireD. extinguish the fire using a combination nozzle with applicator69. Which of the following statements is true concerning carbon dioxide when used as afire extinguishing agent?A. Carbon dioxide is corrosive when exposed to fireB. Carbon dioxide should be applied slowly to a large engine room fireC. Its total cooling effect is far greater than waterD. Its smothering effect is excellent for class B fires70. As a duty engineer, as soon as you hear the fire emergency signal, you should ensure that the _______.A. ring buoys are thrown overboardB. engines are stoppedC. fire pumps are startedD. life preserves have been issued to everyone71. When administering artificial respiration, it is of the utmost importance to ______A. use the mouth-to-mouth methodB. clear airwaysC. use rhythmic pressure methodD. check the injured person’s hearbeat72. What is the harmful effect of sulfur in a fuel?A. It causes excessive smoking and soot at low firing ratesB. It doesn’t readily burn when combined with oxygenC. It clogs fuel oil strainers more oftenD. It forms a corrosive acid when mixed water or water vapor73. _____, where minor repairs are carried out with a ship in service, often during a stay inport. This may be remote from a ship repair site.A. V oyage repairsB. Routine dockingC. Damager repairsD. Conversion74. When ship in the dock repairing, engine department should emphasize on theinspection of ______.A. sea valve chest and thrusterB. steering gear and the shaft systemC. sea water systemD. fresh water system75. The additional mark________ in the Classification Certificate for Machineryrepresents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.A. BRCB.MCCC.AUT-0D.AUT-176. Each completed page of the Oil Record Book must be signed by the _____A. engineer on watchB. chief engineerC. chief mateD. master77. The International Oil Pollution Prevention Certificate required by MARPOL is issuedto Chinese flag by the ____A. IMOSCGD.PICC78. If________, the PSCO should proceed to a more detailed inspection.A. the PSCO’s general impression confirm a good standard of maintenanceB. the certificates are validC. the PSCO believes the ship doesn’t meet the requirementsD. the PSCO can’t find deficiencies at first glance79. The Port State Control officer may witness a fire drill carried out by the crew assignedto these duties on the ______A. navigation log bookB. engine room log bookC. oil record bookD. muster list80. STCW78-95 Convention states that officer in charge of the engineering watch is the_______ representativeA. ship-owner’sB. master’sC. chief engineer’sD. manager’s81. In the event of minor emergencies when the machinery spaces unattended,___________will be informed of malfunctions in the machinery by his cabin monitor.A. the chief engineerB. the engineer on cabin watchC. the bridge officer on watchD. the master82. At an unsheltered anchorage the chief engineer officer shall consult with the masterwhether or not to ______A. do engine repair workB. clean sea water filterC. maintain an underway watchD. take bunkering83. The Pollution Prevention Regulations require that all oil spills in United States watersbe reported immediately to the ______A. local port authorityB. corps of engineersC. U.S. coast guardD. statepollution board84. When the garbage is mixed with some discharges having different disposal ordischarge requirements, ________shall applyA. any requirement appointed by the PSC officerB. the most suitablerequirementC. the most stringent requirementD. no requirement85. According to the SOLAS convention, the engine room emergency bilge water suctionshould connect with _____A. the main S.W. pumpB. the ballast pumpC. the air-conditioning water pumpD. the main S.W. pump or ballast pump that have the biggest output86. The purpose of the ISM Code is to provide ______standard for the safe managementand operation of chips and for pollution prevention.87. ______means the level for which appropriate additional protective security measuresshall be maintained for a period of time as a result of heightened risk of a security incident.A. Security level 1B. Security level 2C. Security level 3D. Securitylevel 488. The installation and prevision of fire fighting equipment is mainly subject to ______A. ISM CodeB. ISPS CodeC. JBC CodeD. FSS Code二、关联题（关联提题干下有4个小题，每小题4个选项）第一组：In a closed fresh water system, the engine jackets, the heat exchanger and the circulating pumps form a continuous circuit which is not open to the atmosphere. The cylinder jacket cooling water after leaving the engine passes to a sea water circulating cooler (heat exchanger) and then into the jacket water circulating pumps. It is then pumped around the cylinder jackets, cylinder heads, exhaust valves and turbo-blowers. However, provision has to be made for the expansion of the water due to the increase in temperature and due to small amounts of air which may enter the system and become entrained and for water make-up due to leakages. These are met by a small head tank which is open to the atmosphere and placed at a higher level than any other point in the system so that the small changes in volume can be accommodated by changing the level of the free surface of the water in the tank. The head tank is generally connected into the system at the pump suction, as this minimizes the chance of air being draw into the system at the pump. The minimum height of the head tank may be based on maintaining pressure of fresh water in the heat exchanger above that of the seawater to ensure that in the event of a small internal lock developing seawater cannot enter the fresh water system. Alternatively, it may be based on the need for a minimum pressure to be maintained within the jackets to avoid cavitations effects. The closed systems usually need vents if steam pockets or air locks are not to cause trouble. Vent pipes of small-bore tube are lead from any local high point in the system to the top of the head tank for the release of air from the cooling water. A heater in the circuit facilitates warming of the engine prior to starting by circulating hot water. The temperature of the water entering the engine jackets is regulated by means of a by-pass across the jacket water cooler. The proportions of water passing through the cooler, or bypassing it are controlled by a three-way valve. The temperature is usually adjusted to maintain a constraint outlet water temperature from the engine regardless of the load or speed or the temperature of the seawater. The piston cooling system may be an open system which employs similar components with the closed system, except that a drain tank is used instead of a head tank and the vent are then led to a hopper or tundish at the high point in the machinery space. The hopper serves as a visual flow indicator. A separate piston cooling system is used to limit any contamination from piston cooling glands to the piston cooling system only.89. The loop of the jacket cooling water is ______A. engine----heat exchanger----circulating pumps-----engineB. heat exchanger-----engine----circulating pumps----heat exchangerC. circulating pumps----heat exchanger-----engine-----circulating pumpsD. circulating pumps----engine-----heat exchanger----head tank90. A small head tank is provided in the closed jacket cooling water system for _____A. water expansionB. water make-upC. warming of the engineD. water expansion and make-up91. The head tank is connected to the closed circuit at _____A. engine inletB. pumps inletC. heat exchange inletD. engine outlet92. The jacket water temperature is regulated to maintain a constraint temperature of ___A. engine inletB. pumps inletC. heat exchanger inletD. engine outlet第二组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 detailedinspection (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 as not in compliance with the requirement 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 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 ort state officials to 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)93. After security incident, the revision of the SSP will made by ______A. the SCOB. the SSOC. persons duly authorized by the Ship’s Flag State AdministrationD. information not given94. Which statement is True?A. The Port State Control Officer has no right to check a SSPB. The M aster has the right to refuse the request from a Port State Control Officer to check the confidential part of the SSP on boardC. The Confidential part of a SSP can never been subject to non-flag StateD. Even the flat State has no right to check the SSP thoroughly95. The Restricted parts of a SSP are kept on board by ______A. the CSOB. the SSOC. the Flag StateD. the master96. 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。

轮机系统英语试题及答案

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

轮机员考试真题二及答案

中华人民共和国海事局2006年第1期海船船员适任证书全国统考试题(总第39期)科目：轮机英语试卷代号：806适用对象：近洋航区750-3000KW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 needle valve will open when the fuel pressure acting on the needle valve ______exerts asufficient force to overcome the spring compression.A. tape faceB. tapered faceC. surfaceD. thinner face2.The bearings used to support the crankshaft are generally called ______.A. line shaft bearingsB. connecting rod bearingsC. main bearingsD. support bearings3.For Vee-form engines, ______is shaped to given two slopping surface on which ______are placedat the correct relative angle to each other.A. the bottom of the column/ the cylinder blocksB. the top of the column/ the cylinder headsC. the top of the column/ the cylinder blocksD. the bottom of the column/ the cylinder heads4.In a diesel engine, fuel must be broken up into a spray of fine droplets to ______.A. increase its qualityB. obtain complete burningC. reduce its weightD. all of the above5.An increased pressure differential between the inlet and outlet of a strainer usually indicates thestrainer is ______.A. holedB. fouledC. cleanD. dry6.The purpose of the delivery check valve used in a diesel fuel injection jerk pump is to ______.A. assist in a quick cutoff of fuel injectionB. allow oil backflow from the injector to the helixC. reduce fuel oil pressure between injection strokesD. meter the quantity of fuel delivered7.Excessive clearances in the main or crank-pin bearings will sometimes be indicated by______before any bearing knock is heard.A. loss of flow in the fuel systemB. loss of pressure in the air systemC. loss of flow in the lubricating systemD. loss of pressure in the lubricating system8.The fuel oil is drawn from a tank in the double bottom and pumped to _____.A. a buffer tankB. a centrifugeC. a service tankD. a settling tank9.The outlet from an expansion tank of a closed freshwater cooling system should be piped to the______.A. cylinder head water outlet headerB. cylinder jacket inlet mainC. heat exchanger inlet connectionD. jacket water pump suction line 10.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 Engine11.The way to reduce ______is to build up a film or lubricant between any two surfaces that rubagainst each other.A. frictionB. collisionC. inertiaD. resistance12.While standing by the engine, You should ______.A. turn the engineB. check oil levelC. stop fuel oil pumpD. A and B13.To start the ejection process ,the oil feed to the centrifuge is first shut off and the oil remaining inthe bowl removed by admitting ______.A. flashing waterB. operating oilC. flushing waterD. sealing water14.Higher than normal jacket water temperatures occurring in all cylinders of a diesel engine canresult from a/an ______.A. oil suction line restrictionB. correct amount of coolantC. cavitation erosion in the water jacketsD. clogged sea suction strainer15.Close the______.A. keywayB. shaftC. packingD. valve16.Which pump is the self-priming pump?A. turbineB. centrifugalC. GearD. axial flow17.A feed pump for an auxiliary boiler might lose suction if the ______.A. boiler water level is lowB. feedwater is too hotC. boiler steam demand is lowD. feedwater is too cold18.A simple pumping system consists of a suction branch, a pump and______.A. a priming deviceB. a discharge branchC. a filterD. a suction valve19.The lube oil cooler is located after the lube oil filter in order for ______.A. the filter to operate more efficientlyB. the lube oil cooler to be bypassedC. positive lube oil pump suction to be assuredD. galvanic action(流电产生的作用) in the cooler to be minimized20.A check valve is another name for______.A. a test valveB. an inspection valveC. a stop valveD. a non-return valve21.If an operating auxiliary boiler has a water pH reading of 7, you should ______.A. bottom blow the boilerB. treat the water with caustic soda(苛性钠)C. treat the water with chemicalD. reduce the water alkalinity to recommended readings22.In the hydraulic system, _____ is the power unit.A. oil pumpB. control valveC. hydraulic motorD. fittings23.Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, couldresult in ______.A. increased fuel consumptionB. increased feed water consumptionC. fuel pump failureD. combustion control system failure24.The ______is used to treat bilge water.A. oil centrifugeB. oily water separatorC. incineratorD. distiller25.A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particlesof ______.A. waterB. babbittC. iron or steelD. acids26.Here some oil in the oily water separator, as a result of its lower ______, will separate and riseinto the oil collection space.A. temperatureB. viscosityC. densityD. velocity27.On a tank vessel, which of the following substances would be burning in a class 'B' fire?A. OilB. WoodC. RagsD. Electrical wiring28.The ______belongs to the anchor handling equipment.A. cable stopperB. winch barrelC. slewing rimD. warping drum29.The ______is used for hauling in or letting out the wires or ropes.A. windlassB. anchor capstanC. turning gearD. winch barrel30.The usual number of single-acting pistons used in a variable stroke axial-piston pump is ______.A. 3 or 5B. 5 or 7C. 7 or 9D. 9 or 1131.Which is the pollution prevention equipment?A. booster pumpB. evaporatorC. oily water separatorD. cooler32.The fresh water generator produces fresh water ______.A. by cooling sea waterB. by heating sea waterC. by evaporation of sea waterD. by purifying sea water33.After passing through the expansion valve the refrigerant should be in the state of ______.A. vaporB. liquidC. solidD. None of the above is true.34.In the condenser, the hot, high pressure refrigerant gas is cooled by the sea water and becomes ___.A. fresh waterB. vaporC. mixtureD. liquid35.Differential pressures can be measured with the use of a ______.A. diaphragm type gaugeB. pressure transducerC. manometerD. all of the above36.______is used for sensing the temperature of the room in the air condition system.A. An expansion valveB. An evaporatorC. A thermostatD. A condenser37.The purpose of a main switchboard circuit breaker's reverse-power trip is to ______.A. prevent main circuit overloadB. protect the circuit breaker blowout coilC. prevent alternator motorizationD. prevent low voltage tripout38.The operation of ______two alternators requires the voltages to be equal and also in phase.A. parallelingB. series-mountingC. runningD. control39.The emergency generator or emergency battery is connected to ______on most large ships.A. distribution boardsB. section boardsC. emergency switch boardsD. main switch boards40.Moisture in a D.C. motor would cause ______.A. short circuitB. speed upC. slow downD. hunting41.The operating medium for control systems may be ______.A. compressed airB. hydraulic oilC. electricityD. all of the above42.Which of the following marine examples belongs to the open loop control system?A. accommodation heating systemB. steering gearC. boiler controlD. cargo control43.The ______is used to measure the volume of a liquid or gas through a pipeline within any givenperiod of time.A. flowmeterB. viscometerC. micrometerD. feeler44.Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an ______.A. overspeed tripB. audible/visual alarmC. the ships/boats general alarmD. reserve oil storage tank45.Engine protection by means of an alarm or shutdown control can be obtained with devices that aresensitive to ______.A. temperatureB. pressureC. engine speedD. all of the above 46.Under which of the listed conditions can the engine room retake the throttle （减速）control fromthe bridge?A. Any time it is deemed（认为） necessary.B. Only with the master's permission.C. After a 10 minute delay to the input command.D. Only after the throttle has been placed in stop.47.Which of the following statements represents the main difference between a relay and a contactor?A. Contactors control current and relays control voltage.B. A relay is series connected and a contactor is parallel connected.C. Contactors can handle heavier loads than relays.D. Contactors are made from silver and relays are made from copper.48.In order to inspect both piston and cylinder wall thoroughly, the cylinder cover should be taken offand the piston should be ______.A. craned outB. rolled outC. lifted outD. turned out49.Diesel engine exhaust temperatures may be used to indicate ______.A. leaking exhaust valvesB. an overloaded cylinderC. a clogged injector nozzleD. all of the above.50.To successfully reduce an excessively high diesel engine exhaust gas temperature, you should ___.A. reduce the engine driven fuel pump outlet pressureB. retard the fuel injector timing to reduce powerC. increase the fuel rack settingD. reduce the load on the engine51.The bearing cap and shell are replaced and tightened up until ______.A. the “ nip ”is zeroB. the “ nap ” is zeroC. the “ gap ”is correctD. the “ clearance ” is correct52.If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may bedelayed 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 incompletebustion knock can occur in the cylinders of a diesel engine under any condition permitting______.A. a shortened ignition delay periodB. a lean fuel/air mixtureC. excess fuel in the combustion chamberD. rapid vaporization of injected fuel droplets54.Fix the fuel injector into ______after repair.A. the cylinder linerB. the cylinder coverC. the cylinder jacketD. the piston55.The reciprocating pump can’t draw water from a tank may be caused by ______.A. leaky suction pipeB. opened inlet valveC. too much water in tankD. None of the above56.______, the engine must be stopped immediately.A. Should knocking occurB. If knocking occurC. Should if knocking occursD. If occur knocking57.A water pump can not supply water after starting. It may be caused by ______.A. closed discharge valveB. broken pipe lineC. worn shaftD. both A and B58.A centrifugal pump can’t supply water after starting. You should check ______.A. priming waterB. power supplyC. discharge pressureD. bearing lubrication59.When start a screw pump, the by pass valve should be ______.A. closedB. opened fullyC. cracked openD. partly open60.It is well known that the whole power distribution of the ship’s electrical services mainly dependon the ______.A. sub-boardsB. main switchboardsC. emergency switchboardsD. distribution boards61.Defective governor in a diesel engine may lead to:A. smoky exhaustB. starting failureC. ignition relayD. over speed62.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 correct63.The crankcase can not be opened ______the parts have been cooled down.A. ifB. asC. unlessD. when64.The fire of electrical equipment is classified as ______fire.A. Class AB. Class BC. Class CD. Class D65.Upon the completion of required tests, a ______should be placed on each extinguisher, showingthe date and the person who completed the tests.A. capB. discC. tagD. cover66.If the buoyant force （浮力）on a ship's hull is equal to or greater than the displacement tonnage,the ship will ______.A. require ballast added to only the port side tanksB. be down by the headC. sinkD. float67.In the first 24 hours after abandoning a vessel, water should be given only to personnel who are __.A. thirstyB. sick or injuredC. wetD. awake68.The order“Bow thrust stop.”means“______”.A. Bow thrust full to portB. Bow thrust full to starboardC. No bow thrust revolutionsD. No stern thrust revolutions69.Which types of portable extinguisher should you watch for the reflash of the fire?A. foam and waterB. CO 2 and dry powderC. dry powder and waterD. foam and CO 270.Auxiliary machinery covers everything onboard except______.A. main enginesB. main boilersC. pipes and fittingsD. A and B71.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 oil72.The value of GM still remains one meter, meanwhile we can pump the ballast water to ______theship on even keel.A. makeB. putC. keepD. get73.The class of fire on which a blanketing effect is essential to extinguish the fire is ______.A. class AB. class BC. class CD. class D74.The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of______.A. an isochronous(同步的) governorB. elastic(弹性的) engine mountsC. a vibration damperD. a cast iron bed plate with good flexible qualities二、关联题（每组关联题题干下有4个小题，每小题4个选项）During normal operation on heavy oil at sea, the oil is taken from the HO tanks, where it is stored. First, it is fed through a heater and next through a centrifuge for purification. It may then pass through a cooler, before being discharged to the steam-heated heavy oil service tanks. Two of these are usually fitted and they are used alternately. One tank is in use, while the other is being filled. These tanks are heated to a moderate temperature and self-closing drain valves are fitted to remove any water or sludge which may settle out. The oil is drawn from the service tank in use by pumps and discharged at low pressure to the fuel oil heater. These pumps should be in duplicate. A relief valve on the pumps will return excess pressure to the system. A viscosity regulator is fitted at the heater discharge, through which the oil will pass. This automatically controls the temperature of the oil fuel leaving the heater to maintain its viscosity within close limits. A by-pass must be fitted to the viscosity regulator. The oil is then discharged through a fine strainer to the main engine fuel pump suctions. A pressure control valve is fitted in thesystem and excess oil returned either to the heavy oil service tanks or to a balancing tank.A diesel fuel tank is included in the system with its discharge to the primary pump suctionsthrough a change-over valve. By operating this valve the engine may be operated on diesel oil.Change-over should be very gradual to allow temperatures in the system to stabilize. During this period, the excess oil will return either to the heavy oil service tanks or a balancing tank. After it has been pumped from the DO tanks, where it is stored, the diesel oil passes through a centrifuge for purification before entering the diesel oil tank.75.The word “these” in line 4 probably means ______.A. HO tanksB. a heater and a centrifugeC. a heater and a coolerD. heavy oil service tanks76.How is change over from heavy oil to diesel oil carried out?A. Step by stepB. Hand over handC. Step for stepD. Quickly77.Where are self-closing drain valves fitted?A. HO tanksB. Heavy oil service tanksC. Balancing tankD. Centrifuge78.Which of the following statements is true according to this passage?A. Two heavy oil service tanks are used meanwhile.B.“Heater” mentioned in this passage is only used to heat heavy oil.C. Two pumps are fitted, which draw oil from the service tank in use.D. Diesel oil passes to the primary pump, and then through a change-over valve.三、中译英（共2题，请将答案写在答题纸上）79.所有费用由船东支付。