正确答案: B

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题目：由于废气涡轮增压器（），所以它属于精密机械。

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学习资料的答案和解析：

[单选题]中国船级社要求营运船舶的曲轴臂距差为（）时，应限期修理。

＞0.25S

[单选题]主机底脚螺栓松动则可能导致（）。Ⅰ.垫块磨损；Ⅱ.机座局部下沉；Ⅲ.曲轴变形；Ⅳ.主机振动。

Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ

[单选题]相邻轴同轴，其连接法兰处偏中值为（）。

A．δ＝0、φ＝0

[单选题]中间轴承的布置如果数量多、间距小（）。Ⅰ.则轴线变形的牵制作用增强；Ⅱ.会使轴承增加附加负荷

Ⅰ+Ⅱ

[单选题]At the top of the A-frames there is a strong cast iron frame called （）.

the scavenging box

[单选题]If diesel oil in this tank is used, the （） of the oil must not exceed 120 degree F.

temperature

[单选题]Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to （）.

fail to react to small speed changes

[单选题]The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）

higher at sea than while maneuvering