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單項選擇題

Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.

A.directly under the boom
B.moving away from the boom
C.stopped dead in the water
D.tied to the boom

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單項選擇題

After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.

A.hoist man
B.limit switch
C.brake handle
D.preventer bar

單項選擇題

A vessel may be unable to take proper and effective action due to the speed（）too high or，in some circumstances，too low.

A.is
B.is to be
C.will be
D.being

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