题目内容

液压系统的排气过程是（）.

A. 放出管路或附件中的空气。
B. 放出油箱中多余的油液。
C. 放出部分油液以带出混入油中的气体。
D. 放出被污染的部分油液。

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Frapping lines are fitted to lifeboat davits to（）.

A. secure the lifeboat in the davits when in the stowed position
B. bring the lifeboat close along the rail in the embarkation position
C. give the occupants a safety line when the boat is being lowered from the embarkation level
D. reduce the swinging of the lifeboat at the embarkation level

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