题目内容

用从扫气口用硬棒触动观察的方法检查和判断活塞环的状态，如发现所触动的环在环槽中不需用力就能活动自如，则说明该活塞环______。

A. 正常
B. 断裂
C. 弹力不足
D. 过度磨损

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用从扫气口用硬棒触动观察的方法检查和判断活塞环的状态，如发现所触动的环在环槽中不需用力就能活动自如，则说明该活塞环______。

A. 正常 B. 断裂 C. 弹力不足 D. 过度磨损

If the compensating needle valve of a hydraulic governor is opened more than necessary the

How to pump out bilge water in the engine room？

Have you ever served the auxiliary engine to combustion heavy oil？ What should be borne in

Can you measure oil level？ Which method is right, to measure ullage height or to measure oil depth？

A. 正常
B. 断裂
C. 弹力不足
D. 过度磨损