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單項(xiàng)選擇題

The unlashing work must be finished before （）.

A.discharged
B.being discharged
C.discharging
D.discharges

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單項(xiàng)選擇題

We haven’t got enough （）to do the work.

A.heads
B.hands
C.fingers
D.eyes

單項(xiàng)選擇題

Stow the derricks （）before sailing.

A. fore and aft
B. up and down
C. port and starboard
D. left and right

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