[其它考试]《轮机英语》最新题库.doc

轮机英语老题库1. “Before disconnecting the oil pipe, would you flush the oil retained in the pipe _?” asked the oil barge owner.A. by using of fresh waterB. with compressed airC. by using of sea waterD. with chemical compound2. “Stand by an engine” means _.A. “prepare to stop the engine”B. “assemble an engine on its bedplate”C. “make an engine ready for starting”D. “dismantle an engine”3. A _ is the foundation of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.A. frameB. bedplateC. cylinderD. liner4. _ are commonly used in mechanical-hydraulic governor to sense engine speeds.A. DoorsB. BulksC. FlyweightsD. Flywheels5. _ are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.A. DoorsB. Aspirate gauzerC. CouplingD. Blind6. _ arrangements have low temperature air and high temperature exhaust gas passing through adjacent ports, causing temperature differential problems for the liner material.A. Loop scavengeB. Gross scavengeC. Uniflow scavengeD. Supercharge7. _ became oval, it should be machined.A. The upper half of cross-head bearingB. The cross-head pinC. The cross-head bearingD. The cross-head guide plate8. _ device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.A. An automaticB. A transmissionC. A self-regulatingD. An interlocking9. _ fuel oils _lubricating oils require treatment before passing to the engine.A. Both / andB. Neither / norC. Either / orD. Both / or10. _ is sometimes used for piston cooling since leaks into the crankcase would not cause problems.A. Diesel oilB. Hydraulic oilC. Lube oilD. Mineral oil11. _ is the removal of exhaust gases by blowing in fresh air.A. Gas exchangeB. ChargingC. ScavengingD. Supercharging12. _ is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.A. The fuel oilB. The lube oilC. The sea waterD. The fresh water13. _ may be the first possible cause which makes the engine to lose power or slow down when it is running.A. Hot bearingB. Starting valvesC. Unequal distribution of loadD. Excessive crankshaft clearance14. _ of an engine crankshaft can be detected by measuring deflections of crank webs for each unit of the engine.A. MisalignmentB. LengthC. StrengthD. Stresses15. _ of the A-frames there is a strong cast iron frame called the scavenging air box.A. At the topB. At the bottomC. In the topD. In the bottom16. _ pistons have low inertia and high coefficient of thermal expansion.A. Cast ironB. Cast steelC. Forged steelD. Aluminum17. _ scavenging means both exhaust ports and scavenging ports are arranged to the same side.A. UniflowB. CrossC. LoopD. Straight18. _ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.A. The watch keeping personnelB. The chief engineerC. The person on a bunker bargeD. Any of the above19. _ tappet clearance will cause the exhaust valve to open early and close late in cycle and will increase its maximum lift.A. ExcessiveB. InsufficientC. CorrectD. None of the above20. _ tappet clearance will cause the exhaust valve to open late and close early in cycle and will reduce its maximum lift.A. CorrectB. InsufficientC. ExcessiveD. None of the above21. _ tappet clearance will cause the exhaust valve to open late and close early in cycle and will reduce its maximum lift.A. CorrectB. InsufficientC. ExcessiveD. None of the above is correct.22. _ the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuel.A. At the beginning of the compression strokeB. At the beginning of the suction strokeC. At the end of the working strokeD. At the end of the exhaust stroke23. _ the supercharge pressure is, _power an engine develops.A. The higher / the moreB. Higher / moreC. Higher / littleD. The higher / the less24. _ device is provided to prevent starting air from being admitted to the cylinders before reversing is completed.A. An automaticB. A transmissionC. An interlockingD. A self-regulation25. _ is not properly set thus causing either advanced or retarded firing.A. A pistonB. A fuel injection pumpC. A feed water pumpD. A lube oil pump26. _ means that both exhaust ports and scavenging ports are arranged on the same side.A. Uniflow scavengeB. Cross scavengeC. Loop scavengeD. Straight scavenge27. _ rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder.A. PistonB. SoundingC. RegulatingD. Connecting28. _ shows 1.2 meter and the specific gravity of the oil is 0.96. According to the measuring scale, that makes 150 tons.A. The piston rodB. The push rodC. The sounding rodD. The connecting rod29. _ allows for expansion and water make up in the water cooling system.A. A top tankB. A head tankC. A head valveD. A drain tank30. _ at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.A. A relief valveB. An alarmC. A pressure gaugeD. A non-return valve31. _ is used for washing and drinking.A. The ballast systemB. The salt water systemC. The bilge systemD. The domestic system32. _ provide the water to the pistons.A. Pneumatic piesB. Hydraulic pipesC. Telescopic pipesD. Operating gas pipes33. _ are fitted in the exhaust system and facilitate charge removal and scavenging in each cylinder.A. DiffusersB. CompressorsC. Steam boilersD. Soot blowers34. _ are formed by abrasive particles entering the bearing and scoring the shaft.A. GroovesB. RecessesC. RidgesD. Nips35. _ are mounted on and bolted to the bed-plate cross girders.A. The crankshaftB. The crankcaseC. The guide-waysD. The frames36. _ is a precaution which contributes to avoiding trouble under operating conditions.A. Constant inspectionB. Keeping constant loadC. Remaining constant temperatureD. Varying speed37. _ is a source of power by which the diesel engine may operate.A. Water energyB. Electrical energyC. Chemical energyD. Heat energy38. _ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.A. A filterB. A centrifugeC. A distillerD. A generator39. _ is fully floating in both connecting rod small end and the piston skirt.A. The piston rodB. The cross head pinC. The gudgeon pinD. The crank-pin40. _ is made of a boss with separated blades mounted into it.A. A variable pitch propellerB. A variable pitch nutC. A fixed pitch parallelD. A fixed pitch screw41. _ is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A. An air receiverB. An operating valveC. An automatic valveD. An air distributor42. _ neutralizes the acid conditions and _ cleanses the rings and grooves.A. The detergency / the alkalinityB. The alkalinity / the detergencyC. The inhabitant / the waterD. The additives / the distilled water43. _ of the controllable pitch propeller enables the blades to be moved to change the pitch angle.A. An external mechanismB. An internal mechanismC. An interlock deviceD. A hunting gear system44. _ on a ship transmits power from the engine to the propeller.A. Automatic control systemB. Speed regularly systemC. The transmission systemD. Compression air system45. _ or air venting arrangement is fitted to the fuel supply passage.A. An air pumpB. A compressorC. A fuel pumpD. A priming46. _ providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.A. Except forB. BesideC. ExceptD. In addition to47. _ the engines, the diesel engine is _ used engine on board.A. Between / more commonlyB. Among / the most commonlyC. Between / not more commonlyD. Among / not the most commonly48. _ water is more expensive than fresh water, it has high specific heat and low viscosity.A. DistilledB. DistillingC. BoilingD. Boiled49. _ for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A. The driven gearB. The driveC. The greaseD. The lubricating oil50. _ in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.A. BecauseB. Owing toC. ForD. No matter51. _ is secured by means of side-chock bolts and end-chock bolts.A. The bedplateB. The columnC. The main bearingD. The double bottom52. _ controls the fuel oil temperature in order to provide oil at the correct viscosity for combustion.A. The viscosity regulatorB. The temperature controllerC. The flow meterD. The pressure switch53. _ for attachment to the propeller shaft also accommodates the turning gear and is integrally forged with the crankshaft.A. The coupling flangeB. The camshaftC. The cross-head pinD. The cylinder jackets54. _ should be taken out, cleaned, and lifting checked every four to six months.A. PistonsB. Fuel injection valvesC. CrankshaftD. Cylinder covers55. _ usually helps to induce air movement to assist combustion.A. cylinder coverB. Main bearingC. The exhaust valveD. The piston movement56. _ may have two emergency source of power, thus requiring two emergency switchboards.A. Large passenger vesselsB. General cargo shipsC. Container shipsD. Oil tankers57. _ supplies pilot air to control the cylinder air start valves.A. An air compressorB. An indicator cockC. An air distributorD. A safety valve58. _ less equipment in contact with sea water, the corrosion problems are much reduced in a central cooling system.A. BecauseB. WithC. WithoutD. Though59. _ clearances in the main or crank pin bearings will sometimes be indicated by loss of pressure in the lubricating system before any bearing knock is heard.A. Too largerB. Too smallerC. ExcessD. Excessive60. A _ on the delivery side of the pump closes to stop fuel oil returning from the injector.A. return valveB. non-return valveC. safety unitD. stop valve61. A _ ensures a constant pressure at the fuel main.A. transfer pumpB. control air bottleC. pressure regulating valveD. non-returning valve62. A cast steel strong back is fitted in way of the combustion space to help absorb _.A. flame temperatureB. fuel oilC. air movementD. gas forces63. A charge of fresh air is drawn into the engine cylinder and then _ by the moving piston _ very high pressure.A. pressed / toB. pressurized / withC. pushed / inD. compressed / to64. A common trouble with the fuel pump plunger or fuel valve spindle is _.A. water leakageB. steam leakageC. oil leakageD. air leakage65. A common trouble with the fuel pump plungers or fuel valve spindle is _.A. broken downB. stuckC. oil leakageD. carbonized66. A diesel engine is similar to a gasoline engine except that the former has no _.A. corss-headB. cylinderC. connecting rodD. spark plug67. A diesel engine's crankcase oil level is found to be too high. You should suspect that _.A. the engine was over filledB. there might be a fuel leakC. there might be a water leakD. all of the above68. A distance piece, known as a _ may be interposed between the rod and the bearing housing.A. bearing shellB. bearing linerC. compression plateD. lead wire69. A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct _.A. compression pressureB. compression testC. compression ratioD. compression clearance70. A governor automatically controls engine speed by regulating _.A. fuel supplyB. firing orderC. engine loadD. oil level71. A heater in the circuit facilitates warming of the engine prior to _ by circulating hot water.A. startingB. stoppingC. to startD. to stop72. A high temperature alarm or _ which will melt is used to guard against the explosion of compressor air pipelines.A. a flame trapB. a relief valveC. a fusible plugD. a bursting cap73. A hot air start pipe indicates that there is _.A. inefficient coolingB. a leaking air start valveC. a clogged drain valveD. a leaking air bottle74. A level gauge for a tank is to _.A. give the pressureB. give the contentsC. give the shape of the tankD. give the accuracy level75. A low speed engine requires _ reduction gearbox _ it and propeller.A. none / bothB. no / bothC. none / betweenD. no / between76. A lubricant often has to perform many duties in any situation, in addition to its fundamental job of _.A. resisting oxidizationB. reducing frictionC. promoting moving speedD. developing inertia77. A main bearing consists of two shells which are secured by means of studs and _.A. tie rodsB. through boltsC. lead wiresD. bearing caps78. A number of cylinder liners are enclosed in one cast iron casing to form a _.A. cylinder coverB. cylinder blockC. cylinder frameD. bed-plate79. A number of different scavenging methods _ in slow speed two-stroke engines.A. are in useB. is usedC. are usingD. has been used80. A reduction in load on a diesel engine results in _ of speed of the crankshaft.A. a a reductionB. an increaseC. an outingD. a downwards81. A sealing arrangement is provided at _ of the tail-shaft with the propeller and cone completing the arrangement.A. both endsB. neither endC. the outboard endD. either end82. A separate piston cooling system is used _ any contamination from piston cooling gl