大管轮轮机英语综合(33-48期)(12)

C. to provide local manual control D. to provide right rudder angle

76. Another name for the “swash plate” in the variable delivery pump is

______.

A. tiltable disc B. gravity disc C. distributing disc D. catch plate

中华人民共和国海事局

2005年第3期海船船员适任证书全国统考试题(总第38期)

科目：轮机英语 试卷代号：803

适用对象：无限、近洋航区3000KW及以上船舶大管轮

（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68题，每题1分，第69题至76题，每题1.5分,第77题至78题, 每题10分。

二、单项选择题：

1. Which one is connected to the piston?

A. cylinder B. connecting rod C. thrust shaft D. crank shaft 2. The trouble-free life of an engine indicates______.

A. the period of time during which no trouble occurs to the engine B. no trouble will occur to the engine all its life C. trouble may occur freely to the engine

D. no matter what you do to the engine, no trouble will occur during this period

3. Additives ______protective layers on metal surfaces guarding them against corrosion.

A. damage B. form C. dissolve D. contaminate

4. Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means

of stopping the machinery from ______.

A. within the space concerned B. outside the space concerned C. the throttle station D. within the fire room

5. In some designs the cylinder oil is timed so that the oil injects only on the______.

A. piston crown B. piston groove C. piston skirt D. piston ring belt

6. Which of the processes listed consumes the greatest amount of power while producing the

greatest amount of heat?

A. Overcoming sliding friction B. Overcoming rolling friction C. Overcoming fluid friction D. Overcoming oil wedge friction 7. ______provide the water to the pistons.

A. Pneumatic pipes B. Hydraulic pipes C. Telescopic pipes D. Operating gas pipes

8. According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided

into two main systems, namely, the constant-pressure system and ______. A. the pulse-phase system B. the pulse Doppler system C. the pulse system D. the pulse interval

9. Vee-type engines have the connecting rods from two cylinders connected to each ______of the

crankshaft.

A. throw B. web C. main bearing D. deflection 10. ______ the bodies are, ______the friction will be.

A. The smoother/the greater B. Smoother/less C. The rougher/the greater D. Rougher/greater

大管轮轮机英语综合

11. The engine speed at which resonance can occur is termed ______.

A. maximum speed B. full speed C. sea speed D. critical speed

12. A crankshaft whose center of gravity coincides with its center line is said to be______.

A. dynamically balanced B. statically balanced C. counter balanced D. resonantly balanced 13. ______ the repair in so short a time is unknown to us.

A. How they finished B. How did they finished C. That how they finished D. That how did they finished

14. The principle of hydrostatic lubrication has been applied to the cross-head using______.

A. high pressure lubricators B. tie rods C. fuel injectors D. fuel valves 15. Load control on a diesel engine is accomplished by______.

A. regulating the speed of the turbocharger B. rotating the fuel injector pump plunger

C. regulating the speed of the fuel oil transfer pump D. changing engine timing

16. A reduction in load on a diesel engine results in ______of speed of the crankshaft.

A. a reduction B. an increase C. an outing D. a downwards

17. 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.

18. The ______discharge a nearly constant amount of liquid regardless of pressure.

A. mixed-flow pump B. axial-flow pump C. centrifugal pump D. displacement pump 19. In an auxiliary boiler steam and water system, the highest pressure will be in the ______.

A. steam stop valve B. dry pipe C. feedwater system D. generating tubes 20. The rate of heat transfer in a water-tube auxiliary boiler can be increased by ______.

A. operating the boiler at less than normal water level B. installing fins on the firesides of water-tubes C. increasing the amount of excess air to the burners

D. treating the boiler water with chemical oxygen scavengers

21. High-speed rotation in a centrifugal purifier can produce a force______ the force of gravity.

A. many thousand times larger than B. the same as

C. many thousand times smaller than D. none of the above

22. 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. accelerates

23. Grease the roller bearings with H.P. gun . In the sentence "H.P." means______.

A. horse power B. high pressure compressor C. hand pump D. high pressure 24. The oil sludge is burnt in the _____onboard. I ll show you the ashes.

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