單項選擇題

How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）

A.within two hours
B.within three hours
C.within four hours
D.within five hours

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單項選擇題

It is dangerous for vessels without the operational radar（）the estuary.

A.to get
B.to approach
C.to proceed
D.to close

單項選擇題

Bales close to the deckhead should be covered to prevent（）.

A.damage by dripping sweat
B.damage by odor contamination
C.from striking structure
D.from steel rusty