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1、第一章 船舶动力装置1. “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” 2. A _ is the foundation of the engine, without the support of which the shaft alignment in particular, and engine structure as
2、 a whole, would inevitably be lostA Frame B Bedplate C Cylinder D Liner 3. _ are commonly used in mechanical-hydraulic governor to sense engine speedsA Bulbs B Bulks C Flyweights D Flywheels 4. _ are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the
3、crankshaft main and connecting rod large end bearingA Doors B Aspirate gauzer C Coupling D Blind 5. _ device is provided to prevent starting air from being admitted to the cylinder before the reversing is completedA An automatic B A transmission C A self-regulating D An interlocking 6. _ is the remo
4、val of exhaust gases by blowing in fresh airA Gas exchange B Charging C Scavenging D Supercharging 7. _ 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 coolerA The fuel oil B The lube oil C
5、 The sea water D The fresh water 8. _ may be the first possible cause which makes the engine to lose power or slow down when it is runningA Hot bearing B Starting valves C Unequal distribution of load D Excessive crankshaft clearance 9. _ of an engine crankshaft can be detected by measuring deflecti
6、ons of crank webs for each unit of the engineA Misalignment B Length C Strength D Stresses 10. _ of the A-frames there is a strong cast iron frame called the scavenging air boxA At the top B At the bottom C In the top D In the bottom 11. _ pistons have low inertia and high coefficient of thermal exp
7、ansionA Cast iron B Cast steel C Forged steel D Aluminum 12. _ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipmentA The watch keeping personnel B The chief engineer C The person on a bunker barge D Any of the above 13
8、. _ the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuelA 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 14. _ the supercharge pressure is, _
9、power an engine developsA The higher/the more B Higher/more C Higher/little D The higher/the less 15. _ is not properly set thus causing either advanced or retarded firingA A piston B A fuel injection pump C A feed water pump D A lube oil pump 16. _ rods are not in proper condition so that too much
10、fuel is supplied to the corresponding cylinderA Piston B Sounding C Regulating D Connecting 17. _ shows 1.2 meter and the specific gravity of the oil is 0.96 According to the measuring scale, that makes 150 tonsA The piston rod B The push rod C The sounding rod D The connecting rod 18. _ allows for
11、expansion and water make up in the water cooling systemA A top tank B A head tank C A head valve D A drain tank 19. _ at the end of the distribution pipe ensures that adequate pressure is maintained by the pumpA A relief valve B An alarm C A pressure gauge D A non-maim valve 20. _ is used for washin
12、g and drinkingA The ballast system B The salt water system C The bilge system D The domestic system 21. _ provide the water to the pistonsA Pneumatic pipes B Hydraulic pipes C Telescopic pipes D Operating gas pipes 22. _ are fitted in the exhaust system and facilitate charge removal and scavenging i
13、n each cylinderA Diffusers B Compressors C Steam boilers D Soot blowers 23. _ are formed by abrasive particles entering the bearing and scoring the shaftA Grooves B Recesses C Ridges D Nips 24. _ are mounted on and bolted to the bed-plate cross girdersA The crankshaft B The crankcase C The guide-way
14、s D The frames 25. _ is a precaution which contributes to avoiding trouble under normal operating conditionsA Constant inspection B Keeping constant load C Remaining constant temperature D varying speed 26. _ is a source of power by which the diesel engine may operateA Water energy B Electrical ener
15、gy C Chemical energy D Heat energy 27. _ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tankA A filter B A centrifuge C A distiller D A generator 28. _ is fully floating in both connecting rod small end and the piston skirtA The piston rod B The cross head pin C The gudgeon pin D The crank-pin 29. _ is made of a boss with separated blades mounted into itA A variable pitch propeller B A variable
