During the inspection, the starting air valves should be clo

【名词&注释】

动力装置(power plant)、低速柴油机(low speed diesel engine)、中速柴油机(medium speed diesel engine)

[单选题]During the inspection, the starting air valves should be closed （） the engine from turning.

A. to increase
B. to speed up
C. to prevent
D. to reduce

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学习资料：

[单选题]不同动力装置，起航时间不同，低速柴油机比中速柴油机时间（），冬季约为（）h。

A. 短/1
B. 长/2
C. 长/3
D. 短/1.5

[单选题]采用压铅法测量主轴承的轴承间隙时，不应（），以免破坏测量工作。

A. 粗心
B. 违反测量步骤
C. 使所测铅丝厚度混乱
D. 盘车

[单选题]船轴腐蚀主要发生在（）。

A. 推力轴
B. 中间轴
C. 艉轴
D. 曲轴

[单选题]艉轴铜套产生（）时，应采用换新铜套。Ⅰ.磨损；Ⅱ.腐蚀；Ⅲ.壁厚过薄；Ⅳ.套合松动；Ⅴ.接缝渗水。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅳ
C. Ⅲ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅲ＋Ⅳ

[单选题]The lubricating pipes and dusts should be blown out with （）.

A. atmosphere
B. the fresh water
C. compressed air
D. chemical compound

[单选题]Proper filtering and straining of fuel oil is important because the （）.

A. fuel oil pump will over-speed if dirt is not removed
B. fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil
C. fuel injectors may be damaged by foreign particles in the fuel oil
D. dirty fuel will clog the intake air filter

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