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1、第一章 船舶动力装置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 water B with compressed air C by using of sea water D with chemical compound 2. “Stand by an engine” means _.A “prepare to stop the engine” B “assemble an eng
2、ine 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 Frame B Bedplate C Cylinder D Liner 4. _ are commonly
3、 used in mechanical-hydraulic governor to sense engine speeds.A Bulbs B Bulks C Flyweights D Flywheels 5. _ 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 Doors B Aspirate gauzer C Couplin
4、g D Blind 6. _ arrangements have low temperature air and high temperature exhaust gas passing through adjacent ports, causing temperature differential problems for the liner material.A Loop scavenge B Cross scavenge C Uniflow scavenge D Supercharge 7. _ became oval, it should be machined.A The upper
5、 half of cross-head bearing B The cross-head pin C The cross-head bearing D The cress-head guide plate 8. _ device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.A An automatic B A transmission C A self-regulating D An interlocking 9. _ fuel
6、 oils _ lubricating oils require treatment before passing to the engine.A Both/and B Neither/nor C Either/or D Both/or 10. _ is sometimes used for piston cooling since leaks into the crankcase would not cause problems.A Diesel oil B Hydraulic oil C Lube oil D Mineral oil 11. _ is the removal of exha
7、ust gases by blowing in fresh air.A Gas exchange B Charging C Scavenging D Supercharging 12. _ 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 oil B The lube oil C The sea
8、 water D The fresh water 13. _ may be the first possible cause which makes the engine to lose power or slow down when it is running.A Hot bearing B Starting valves C Unequal distribution of load D Excessive crankshaft clearance 14. _ of an engine crankshaft can be detected by measuring deflections o
9、f crank webs for each unit of the engine.A Misalignment B Length C Strength D Stresses 15. _ of the A-frames there is a strong cast iron frame called the scavenging air box.A At the top B At the bottom C In the top D In the bottom 16. _ pistons have low inertia and high coefficient of thermal expans
10、ion.A Cast iron B Cast steel C Forged steel D Aluminum 17. _ scavenging means both exhaust ports and scavenging ports are arranged to the same side.A Uniflow B Cross C Loop D Straight 18. _ should not undertake any task which will interfere with the supervision duties relating to the main machinery
11、and associated equipment.A The watch keeping personnel B The chief engineer C The person on a bunker barge D Any of the above 19. _ tappet clearance will cause the exhaust valve to open early and close late in cycle and will increase its maximum lift.A Excessive B Insufficient C Correct D None of th
12、e above 20. _ tappet clearance will cause the exhaust valve to open late and close early in cycle and will reduce its maximum lift.A Correct B Insufficient C Excessive D None of the above 21. _ the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuel.A
13、At the beginning of the compression stroke B At the beginning of the suction stroke C At the end of the working stroke D At the end of the exhaust stroke 22. _ the supercharge pressure is, _ power an engine develops.A The higher/the more B Higher/more C Higher/little D The higher/the less 23. _ is n
14、ot properly set thus causing either advanced or retarded firing.A A piston B A fuel injection pump C A feed water pump D A lube oil pump 24. _ rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder.A Piston B Sounding C Regulating D Connecting 25. _ shows 1.
15、2 meter and the specific gravity of the oil is 0.96. According to the measuring scale, that makes 150 tons.A The piston rod B The push rod C The sounding rod D The connecting rod 26. _ allows for expansion and water make up in the water cooling system.A A top tank B A head tank C A head valve D A dr
16、ain tank 27. _ at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.A A relief valve B An alarm C A pressure gauge D A non-maim valve 28. _ is used for washing and drinking.A The ballast system B The salt water system C The bilge system D The domestic system 2
17、9. _ provide the water to the pistons.A Pneumatic pipes B Hydraulic pipes C Telescopic pipes D Operating gas pipes 30. _ are fitted in the exhaust system and facilitate charge removal and scavenging in each cylinder.A Diffusers B Compressors C Steam boilers D Soot blowers 31. _ are formed by abrasiv
18、e particles entering the bearing and scoring the shaft.A Grooves B Recesses C Ridges D Nips 32. _ are mounted on and bolted to the bed-plate cross girders.A The crankshaft B The crankcase C The guide-ways D The frames 33. _ is a precaution which contributes to avoiding trouble under normal operating
19、 conditions.A Constant inspection B Keeping constant load C Remaining constant temperature D varying speed 34. _ is a source of power by which the diesel engine may operate.A Water energy B Electrical energy C Chemical energy D Heat energy 35. _ is arranged for cleaning the lubricating oil in the sy
20、stem and clean oil can be provided from a storage tank.A A filter B A centrifuge C A distiller D A generator 36. _ is fully floating in both connecting rod small end and the piston skirt.A The piston rod B The cross head pin C The gudgeon pin D The crank-pin 37. _ is made of a boss with separated bl
21、ades mounted into it.A A variable pitch propeller B A variable pitch nut C A fixed pitch parallel D A fixed pitch screw 38. _ is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A An air receiver B An operating valve C An automatic valve D An air distribut
22、or 39. _ neutralizes the acid conditions and_ cleanses the rings and grooves.A The detergency/the alkalinity B The alkalinity/the detergency C The inhabitant/the water D The additives/the distilled water 40. _ of the controllable pitch propeller enables the blades to be moved to change the pitch ang
23、le.A An external mechanism B An internal mechanism C An interlock device D A hunting gear system 41. _ on a ship transmits power from the engine to the propeller.A Automatic control system B Speed regularly system C The transmission system D Compression air system 42. _ or air venting arrangement is
24、 fitted to the fuel supply passage.A An air pump B A compressor C A fuel pump D A priming 43. _ providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.A Except for B Beside C Except D In addition to 44. _ the engines, the diesel engine is_ used engi
25、ne on board.A Between/more commonly B Among/the most commonly C Between/not more commonly D Among/not the most commonly 45. _ water is more expensive than fresh water. It has high specific heat and low viscosity.A Distilled B Distilling C Boiling D Boiled 46. _ for the camshaft gear train is taken f
26、rom a spur gear which for a six cylinder engine is at the coupling end.A The driven gear B The drive C The grease D The lubricating oil 47. _ 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 eng
27、ine.A Because B Owing to C For D No matter 48. _ is secured by means of side-chock bolts and end-chock bolts.A The bedplate B The column C The main bearing D The double bottom 49. _ controls the fuel oil temperature in order to provide oil at the correct viscosity for combustion.A The viscosity regu
28、lator B The temperature controller C The flow meter D The pressure switch 50. _ for attachment to the propeller shaft also accommodates the turning gear and is integrally forged with the crankshaft.A The coupling flange B The camshaft C The cross-head pin D The cylinder jackets 51. _ should be taken
29、 out, cleaned, and lifting checked every four to six months.A Pistons B Fuel injection valves C Crankshaft D Cylinder covers 52. _ usually helps to induce air movement to assist combustion.A Cylinder cover B Main bearing C The exhaust valve D The piston movement 53. _ may have two emergency source o
30、f power, thus requiring two emergency switchboards.A Large passenger vessels B General cargo ships C Container ships D Oil tankers 54. _ supplies pilot air to control the cylinder air start valves.A An air compressor B An indicator cock C An air distributor D A safety valve 55. _ less equipment in c
31、ontact with sea water, the corrosion problems are much reduced in a central cooling system.A Because B With C Without D Though 56. _ 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 larger B
32、 Too smaller C Excess D Excessive 57. A _ on the delivery side of the pump closes to stop fuel oil returning from the injector.A return valve B non-return valve C safety unit D stop valve 58. A _ ensures a constant pressure at the fuel main.A transfer pump B control air bottle C pressure regulating
33、valve D non-returning valve 59. A cast steel strong back is fitted in way of the combustion space to help absorb _.A flame temperature B fuel oil C air movement D gas forces 60. A charge of fresh air is drawn into the engine cylinder and then _ by the moving piston_ very high pressure.A pressed/to B
34、 pressurized/with C pushed/in D compressed/to 61. A common trouble with the fuel pump plunger or fuel valve spindle is _.A water leakage B steam leakage C oil leakage D air leakage 62. A common trouble with the fuel pump plungers or fuel valve spindle is _.A broken down B stuck C oil leakage D carbo
35、nized 63. A diesel engine is similar to a gasoline engine except that the former has no _.A cross-head B cylinder C connecting rod D spark plug 64. A diesel engines crankcase oil level is found to be too high. You should suspect that _.A the engine was over filled B there might be a fuel leak C ther
36、e might be a water leak D all of the above 65. A distance piece, known as a _ may be interposed between the rod and the bearing housing.A bearing shell B bearing liner C compression plate D lead wire 66. A distance piece, with ground faces, known as a compression plate, may be interposed between the
37、 rod and the beating housing, its thickness being chosen to ensure the correct _.A compression pressure B compression test C compression ratio D compression clearance 67. A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ens
38、ure the correct _.A expansion ratio B pressure ratio C compression ratio D clearance ratio 68. A governor automatically controls engine speed by regulating _.A fuel supply B firing order C engine load D oil level 69. A gudgeon pin in a trunk piston may be free to float and rotate, with _ to limit ax
39、ial movement.A split pins B crankpins C dipsticks D circlips 70. A heater in the circuit facilitates warning of the engine prior to _ by circulating hot water.A starting B stopping C to start D to stop 71. A high temperature alarm or _ which will melt is used to guard against the explosion of compre
40、ssor air pipelines.A a flame trap B a relief valve C a fusible plug D a bursting cap 72. A hot air start pipe indicates that there is _.A inefficient cooling B a leaking air start valve C a clogged drain valve D a leaking air bottle 73. A level gauge for a tank is to _.A give the pressure B give the
41、 contents C give the shape of the tank D give the accuracy level 74. A low speed engine requires _ reduction gearbox _ it and propeller.A none/both B no/both C none/between D no/between 75. A lubricant often has to perform many duties in any situation, in addition to its fundamental job of_.A resist
42、ing oxidization B reducing friction C promoting moving speed D developing inertia 76. A main bearing consists of two shells which are secured by means of studs and _.A tie rods B through bolts C lead wires D bearing caps 77. A number of cylinder liners are enclosed in one cast iron casing to form a
43、_.A cylinder cover B cylinder block C cylinder frame D bed-plate 78. A number of different scavenging methods _ in slow speed two-stroke engines.A are in use B is used C are using D has been used 79. A reduction in load on a diesel engine results in _ of speed of the crankshaft.A a reduction B an in
44、crease C an outing D a downwards 80. A sealing arrangement is provided at _ of the tail-shaft with the propeller and cone completing the arrangement.A both ends B neither end C the outboard end D either end 81. A separate piston cooling system is used _ any contamination from piston cooling glands t
45、o the piston cooling system only.A to help B to limit C to protect D to remove 82. A separate piston cooling system is used to limit any contamination _ piston cooling glands_ the piston cooling system only.A between, to B either, or C from, to D neither, nor 83. A single piece_ fitted with bronze rings guides the piston in the cylinder liner.A piston skirt B piston crown C guide way D cross-head 84. A slow-speed two-stroke diesel is usually ar
