新造柴油机台架安装或在船上安装或大修后柴油机的安装均需进行（

【名词&注释】

柴油机(diesel engine)

[单选题]新造柴油机台架安装或在船上安装或大修后柴油机的安装均需进行（）测量。

A. 活塞运动部件校中
B. 活塞运动部件装配精度
C. 固定件位置精度
D. 运转情况

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学习资料：

[单选题]Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.

A. lead
B. forged steel
C. alloy steel
D. aluminum alloy

[单选题]The crank-room cover should not be opened until at least （） minutes after the engine stops.

A. one
B. fifteen
C. sixty
D. ninety

[单选题]In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.

A. jacket water outlet
B. cooling water pump outlet
C. heat exchanger outlet
D. expansion tank atmospheric vent

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