正确答案: D

曲轴箱/内圈

题目：对于活塞杆下端是方形法兰的机型如B&W，吊缸时，整个填料函必须随同活塞杆一起吊出去，操作时轮机员只要在（）内拆掉填料函的（）固定螺栓。

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学习资料的答案和解析：

[单选题]由于（）等操作管理不当引起气缸盖发生疲劳裂纹。

A．冷车起动或起动后立即加速

[单选题]除工艺原因外，柴油机气缸套与活塞环工作表面间油膜变薄或遭到破坏，是由于（）等因素造成。Ⅰ.润滑不良；Ⅱ.活塞运动装置对中不良；Ⅲ.冷却不良；Ⅳ.超负荷；Ⅴ.工作表面粗糙度低。

Ⅰ+Ⅱ+Ⅲ

[单选题]（） supplies pilot air to control the cylinder air start valves.

An air distributor

[单选题]Since the burning or combustion takes place within the engine itself, the engine is known as （）.

an internal combustion engine

[单选题]The withdrawing of the cylinder liners, in general, depends on their （）.This may amount to approximately 1/120 of the diameter in some engines.

wear

[单选题]Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）

Exhaust and scavenging