在船上吊缸检查活塞组件时，不必检测（）。

【名词&注释】

发电机、活塞环(piston ring)、空气冷却器(air cooler)、汽轮发电

[单选题]在船上吊缸检查活塞组件时，不必检测（）。

A. 活塞环的弹力
B. 天地间隙
C. 搭口间隙
D. 活塞环的金相组织和硬度

查看答案&解析 查看所有试题

学习资料：

[单选题]超级汽轮发电系统（STG）是废热利用联合装置，其余热利用装置有（）。Ⅰ.废气/蒸汽联合驱动的涡轮发电机；Ⅱ.空气冷却器；Ⅲ.废气锅炉

A. Ⅰ+Ⅲ
B. Ⅰ+Ⅱ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ

[单选题]检验曲轴臂距差的测量精度的方法是用测得的上下止点臂距值之和与左右臂距值之和的差值在（）mm之内，定为测量基本准确。

A. ±0.04
B. ±0.03
C. ±0.02
D. ±0.01

[单选题]In an ordinary four-stroke engine the exhaust valves open （）

A. after TDC
B. before TDC
C. after BDC
D. before BDC

[单选题]The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine’s （）.

A. inlet valves
B. exhaust valves
C. emergency valves
D. run-return valve

[单选题]The most common contaminate of governor hydraulic fluid is （）.

A. moisture
B. dirt
C. acid
D. air

[单选题]High diesel engine cooling water temperatures can be caused by （）.

A. a worn water pump
B. not enough coolant
C. air in the cooling system
D. all of the above

[单选题]Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

A. increasing the volume of intake air
B. shutting off the fuel supply
C. increasing the engine back pressure
D. over-speeding the engine

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