單項選擇題

You should release the （）(重型螺栓)on top of the cover.

A. lock in
B. heavy bolt
C. socket
D. heavy cleat

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單項選擇題

The sailor should （）(報告)it to the duty officer.

A.report
B.ask
C.tell
D.speak

單項選擇題

The running wheel runs along the （）(導(dǎo)軌)on the hatch coaming top.

A. guide rope
B. guide rail
C. side coaming
D. side roller