單項選擇題The master should()necessary precautions to prevent accidents or damage.

A.do
B.take
C.set
D.have


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3.單項選擇題The expression DROP ANCHOR means().

A.Hold anchor
B.Leave anchor
C.Let go anchor
D.Weigh anchor

4.單項選擇題The crew was unable to()access to the engine room due to the extreme heat.

A.maintain
B.retain
C.gain
D.contain

5.單項選擇題The()accident was caused by your ship.

A.sailing
B.damaged
C.sounded
D.abovementioned