輪機英語8套(3)

1、1.After arrived at the port, if it is necessary to lift the piston out and inspect the M/Etemporarily,the chief engineer should report the situation to the _, and the operation could be performed only afterhaving the approvement of relevant department. A. Ship survey bureauB. maritime safetyC. compa

2、ny managerD. Captain2.Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the _A. chief engineer's officeB. engine room control station C. wheelhouse control station D. captain's office3._is provided for each generator with selector switch

3、 to reed the current in etch phase.A. A voltmeterB. A frequency meterC. An ammeterD. A synchroscope4.In order to reduce the chance of detentions ships shoald routinely verify the following except for _.A. operation of the oily weter separator able to be demonstrated. B. all Oil Record Book entries c

4、ompleted according to Marpol. C. cleaning all associeted monitor, alarm and stopping device.D. operetion of the oily weter seperetor monitor able to be demonstreted.5.If a crankcase explosion occurs in a diesel engine, you skould stop the engine and_A. immediately open all crankcase relief portsB. i

5、ncrease crankcase exhauster speed to draw cool air into the engineC. allow the engine to cool naturallyD. increase crankcase scavenge air to remove unburned gases6.In a fixed displacement axial piston hydraulic motor, the speed is varied by _ A. maintaining a constant flow and pressure inputB. regul

6、ating the ratio between torque and speed via the torque limiter at the motorC. controlling the input flow rateD. directing the motor output flow through a bypass line7.In an AC synchronous motor electric propulsion plant, propeller speed is controlled by varying theA. prime mover speedB. number of e

7、nergized main motor polesC. propulsion generator field strengthD. electric coupling field strength8.Prior to entering cargo pumproom you should ensure that _ A. the oily water separator is de-energiredB. the forced ventilating system is operatingC. the cargo pumps are securedD. no monocarbon gases a

8、re present9.Which is the pollution prevention equipment? A.coolerB.evaporatorC.booster pumpD.incinerator10 / 1010. The SOLAS convention prescribes that in the fire fighting drill the duty engineer should start the fire pump and supply deck water in _ minute(s).A.5B.3C.2 d.111.Emergency generator is

9、installed on board mainly to _.A. ensure the power supply to critical equipment if the main switchboard out of power. B. be put into operation during the ship arriving at or leaving portC. supply power specially to charging panelD. connect to the bulbar when the load increasing12. A fire is consider

10、ed 'under control' when_. A. the fire is no longer spreading.B. the fixed systems are activated.c.all fire-fighting equipment is at the sceneD.all hands are at their fire stations13.A simple thermocouple arrangement consists of two_metal wire conductors with the two ends joined with extra-wi

11、res to complete the circuit and a very sensitive million-voltmeter as an indicator.A.varyB.some C.similitude D.dissimilar14.The starting current of an AC. motor is _ the rated current. A.the same asB.equalsC.much larger thanD.less than15.In the event of a flame failure in an auxiliary water-tube boi

12、ler, you must _A. purge the furnace of any combustible gases before attempting to relight the fireB. speed up the feed pump to prevent dry firing when the burner flame is reestablishedC. relight the fire off the brickwork as long as the bricks are cherry redD. relight the boiler immediately to preve

13、nt loss of steam pressure16.Which of the precautions listed should be observed when working with oxy-acetylene welding equipment?A. Keep oxygen regulators and valves coated a light film of oil. B. Bottles should be labeled air and gas.C. Keep cylinders away from exposure to cold temperatures.D. Keep

14、 gas cylinders supported so that they cannot tip over17.Leaky exhaust valve will result in which of the following 1. high exhaust temperature2.lowcompression pressure 3.low firing pressure. A.1,2,3B.1,2C.1D.218.During the diesel engine running period, the water level of F.W expansion tank should nor

15、mally kept at the _ _level of glass tube.A. highestB.1/23/4ClosestD.above 3/419.When ship is entering to a narrow waterway and the fuel feeding of the main engineis keeping unchanged, which of the following is the wrong conclusion? A. the power of main engine will be reducedB. the speed of ship will

16、 be reducedC. the propulsion characteristic of propeller will keep unchangedD. exhausting temperature will be increased20.In the event of a small bunker oil spill on deck occurring while bunkering you should_A. wash down the area with keroseneB. cover the area with foamC. cover the area with absorbe

17、nt materialD. wash down the area immediately with a fire hose21.Spontaneous combustion could occur in_. A.oily rags in an unvented compartment. B.gasoline stored in steel drumsC.fuel accumulation in the bilge. D.paint thinner in an open can22.Which of the listed items should be secured before perfor

18、ming any maintenance on a solenoid operated air start valve?A.Lube oil standby pump and control airB.Motor drain and pneumatic control system power C.Hydraulic switch and engage jacking gear D.Electric power and starting air23.The device used to store a charged pressure for an hydraulic starting sys

19、tem is called the _.A.acceleratorB.reservoirC.accumulatorD.hand pump24.Which of the following my be different for a ship to discharge oily mixtures resulted from machinery spaces when the ship is in or outside the special area?A.the oily mixture is processed through an equipment meeting certain requ

20、irementB.the ship is proceeding en route;C.the oil content of the effluent without dilutionD.the oily mixture does not originate from cargo pump-room bilges on oil tankers.25.Biological sewage water treatment plant work on the_ _. A.aeration processB.heating process C.centrifuging process D.settling

21、 process26.When received the order "Finished With Engine”, which of the following operetions is wrong?A.stop the L.O pump, S.W pump, jacket water cooling pump immediatelyB.stop the F.O booster pumpC.open the main engine scavenge air trunk's drain cocksD.engage the turning tear, turn the mai

22、n engine27.The officer in charge of the engine watch in port may not_. A. be aware of the deck cargo handling prB. be aware of the deck officer's needs relating to the cargo handling equipment.C. raise the alarm in some emergency situationD.make frequent rounds of inspection28.The cetane rating

23、of diesel fuel is an indication of the_ A.lash point of the fuelB.rate of fuel consumptionC.calorific value of the fuelD.ignition quality of the fuel29.Which one is NOT the 'clear grounds' for a more detailed inspection? A.absence of an up-date muster listB.engine log book missingC.no operat

24、ion procedures for the oil separatorsD.the master and the chief engineer are unable to communicate effectively30.During steering gear test_ should be moved through its full travel in both directions. A. the rudderB. pumpC. the hunting gearD. the cylinder31.According to STCW78/95, the abilities speci

25、fied in the standards of competence are grouped as seven functions at three levels of responsibility, which of the following is one of the three levels?A. Optional levelB. Controlling levelC. Support levelD. Navigational level32.In the presence of an open flame or hot surfaces, chlorinated flourocar

26、bon refrigerants decomposes and form_.A. petrolenum crystalsB. carbon monoxideC. phosgene gasD. water vapor33.The need for insulation cleaning may be determined by _. A. the time period since the last cleaningB. low operating temperatureC. visual inspection for dirt accumulationD. high megger readin

27、gs34.The correct tightening is obtained by the use of _ to measure the extension given to the boltsA. thermometers B. stretch gauges C. bridge gaugesD. pressure gauges35.Main bearings for medium speed engines currently in use are of the _ type, Similar bearing shells are employedfor bottom end beari

28、ngsA.integrityB.thick shell C.thin shell D.ball36.Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?A.Carbondioxide should be applied slowly to a large engine room fire. B.Its total cooling effect is far greater than water.C.Its smothering ef

29、fect is excellent for class B firesD.Carbon dioxide is corrosive when exposed to fire.37.In the oil purifier, the interface move outside the top disc, the oil will escapethrough_A.the observe glass passageB.the sludge outlet C.the water outlet D.the sludge passage38.The two most common gases used in

30、 pneumatic systems are_. A.oxygen and hydrogenB.oxygen and acetylene C.helium and nitrogen D.compresed air and nitrogen39.The main objective of ISPS Code is_ A.to ensure the compliance with conventionsB.to avoid the damage to the environment, particularly to the marine environmentC.to specify the me

31、asures to enhance maritime securityD.to prevent the human injury and the loss of life40.The International Oil Pollution Prevention Certificate is valid for a period of_ A.five years from the date of issueB.one year from the date of issue C.four years from the date of issue D.three years from the dat

32、e of issue41.Which of the listed refrigeration system components keeps the refrigerant circulation through the system?A.Condenser B.Expansion valve C.Evaporator D.Compressor42.Which of the listed conditions will affect the mean effective pressure mostly in the cylinders of a diesel engine?A. Tempera

33、ture of the sea waterB.Completeness in the mixing of the fuel and airC.Temperature of the lube oilD.TBN of the lubricating oil43._ _ are used to limit the pressure in any particular portion and mainly control the pressure after the valve.A.Safety valves B.Check valves C.Relief valves D.Reducing valv

34、e44.Which of the following should always be checked prior to starting a diesel engine? A. Air filtersB. Pyrometer readingsC.Fuel oil strainersD.Crankcase oil level45.A fourstroke cycle, turbocharger, 1000 horsepower diesel engine has been operating under load. Theload suddenly increases, causing exc

35、essive black exhaust smoke, and a rapid rise in the lube oil temperetureIn response to this condition, you should _A. increase lube oil flowB. adjust cooling water temperatureC. check the exhaust gas temperatureD. reduce the load46.To control a device or system is to adjust or vary_ which affect it.

36、 A.locationB.linesC.the parametersD.the structures.47.Time delayed or delayed action-type fuses are designed to_ A.prevent opens in motor circuitsB.guard lighting and electronic circuitsC.prevent grounds in branch circuitsD.permit momentary overloads without melting48.A constant hissing sound at the

37、 thermal expansion valve will always indicate_ A.proper refrigerant controlB.a faulty refrigerant control valveC.the flow of 100% liquid refrigerant passing to the evaporatorD.a lack of refrigerant49.If the capacity of a centrifugal pump decreases gradually over a bong period of time, you shoi1d rep

38、lace the _A. lantern rings B. packing gland C. wearing ringsD.mechanical seals50. The time of discharging oil is short, and oily water separator discharges oil frequently. The possible reason is _A.the sensor of low oil level is fully covered by sludge oilB.the screw pump is worst seriously and volu

39、metric efficiency is decreased C.the coarse strainer before thepump in suction system is clogged. D.bilge suction valve is clogged51.The shaft consists of the crank shaft, the intermediate shaft and the propeller shaft.They are connected to each other by means of _A.flangesB.couple ring C.screws D.w

40、elding52.During sea trial, the minimum constant running speed trial for the low speed main engine should be less than_minutes.A.60B.5C.15D.3053.The master may suspend the schedule of hours of rest in the following circumstancesEXCEPT_ A.The seafarer wants to have extra pay by working overtimeB.Cargo

41、 on board is in dangerC.Help another ship in distressD.The safety of the ship is threatened54.When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a_A.faulty suction pressure regulatorB.low differential setting on the H.P. cutoutC.blown fuse in the moto

42、r circuitD.loose expansion valve control bulb55.To repair a samll electrical motor that has been submerged in saltwater, you should_ A.wash it with fresh water and apply an external source of heatB.rinse all electrical parts with a carbon tetrachloride cleaning solvent and then blow drythe motor wit

43、h compressed airC.renew the windingsD.send it ashore to and approved service facility56.What is the application of high-speed diesel engines at sea?(1)They are used for emergency power generation to small applications (2)They are used for electrical power generation on board ships driven by medium-s

44、peed propulsion engines.(3)They can be used on tugs, ferries and barges etc.as main engines.A.(1)+(2)+(3) B.(3) C.(2)+(3) D.(1)+(2)57.The propeller consists of a_with several blades of helicoidal form attached to it. A.wheelB.shaft C.level D.boss58.The double bottom of the ship is for strength and p

45、rovides storage for_1.fuel2.lubrication oil c.watersA.1+3B.1C.3D.1+2+359.An operational amplifier, as used in today's consoles, has a calculated gain of 5. This means that when the input changes_.A.10 volts,the output changes 2 voltsB.5 volts,the output changes 10 volts C.2 volts, the output cha

46、nges 10 volts D.10 volts, the output changes 5 volts60.A large change in ambient temperature, or using an oil of viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the _A.compesating needle valve B.compensating sprin

47、g tension C.pilot valve opening D.accumulator spring tension61.A diesel engine using lube oil with too high a viscosity will exhibit_ A.thickening at higher operating temperaturesB.increased starting difficulty in cold weatherC.increased oil consumptionD.minimal friction losses62.In common rail engi

48、nes, the fuel is _ before is injected into the cylinders. A.already atomizedB.pumped by the injection pumpC.at lower pressureD.stored in a common fuel line63.Which of the following components provides a direct source of seawater for the fire main system?A.Fire pump stuffing boxB.Hose box C.Sluice va

49、lve D.Sea chest64.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.Oil will discharge from the heavy phase discharge port and be wasted. B.Contamination of the lube oil by emulsification will resu

50、lt.C.The lube oil will not be subjected to the proper centrifugal force. D.The lube oil will overheat and flash.65.The presence of scale and dirt on the saltwater side of a lube oil cooler is usually indicated by _.A.clogged lube oil strainersB.decreasing lube oil pressureC.gradually increasing lube

51、 oil temperatureD.seawater leaking into the lube oil system66.Once a scavenge fire is detected, the engine_ firstlyA. must slow downB. should be kept running at rated RPM C. should be slowed downD. will be speeded up67.The International Management Code for the safe operation of ships and for Polluti

52、onPrevention is referred to as_ A.ISM CodeB.IOPP CodeC.IMS CodeD.ISPS Code68.One of the advantages in the sue of a dry liner over a wet liner is_ .A. it fits more loosely due to a decrease in heat transer through the composite wallB. the honing process makes it easier to maintain the desired oil fil

53、m C. there is less likelihood of water leaking into the combustion space D. it is fitted with neoprene O-ring seals69.In a bypass type filtering system for a medium or high speed diesel engine, the lube oil bypassing the filter_A.returns directly to the suction side of the pumpB.flows to the engie b

54、earingsC.flows through a second-stage strainer, re-heater, and returns to the sumpD.returns directly to the sump70.The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally _A.removed by cellulose type filtersB.gums, varnishes, and acidsC.harmless and have no e

55、ffect on system componentsD.always neutralized by oil additives71.Due to_ action fo pistons some relative motion between parts in contact in the coolant supply and return system must occur.A.removingB.reciprocatingC.runningD.rotating72.Thermocouples often be used to measure _ _ in the machineriesA.p

56、ressure B.liquid viscosity C.temperature D.rotate73.Which of the following operational conditions will occur to the disel engine lube oil a extremely high temperatures?A.Lubricating qualities of the oil are enhanced. B.The oil oxidizes and forms carbon deposits. C.The viscosity increases.D.Engine oil consumption decreases.74.Small cracks in the crankshaft bearing surface of a diesel engine are an indication of_A.insufficient lubrication B.fatigue failure C.abnormal wear D.cor