單項(xiàng)選擇題

It is the chief mate’s job（）the tank cleaning operation.

A.to plan
B.planning
C.for planning
D.in planning

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單項(xiàng)選擇題

It is the only entrance（）the harbor for vessels of moderate draught.

A.to
B.for
C.on
D.over

單項(xiàng)選擇題

Loading cargo operation in hold No.3 stopped owing to（）.

A.gangs employed
B.windlass trouble
C.gangs unavailable
D.shortage of navigational charts

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