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單項(xiàng)選擇題

A lightship is like an/a（）(普通船舶).

A. ordinary vessel
B. common ship
C. common vessel
D. cargo ship

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A container ship is one of the （）(干貨) ships .

A. liquid cargo
B. general cargo
C. dry cargo
D. bulk cargo

單項(xiàng)選擇題

Some ships have（）(特殊職責(zé)) ,such as tugs.

A. duty
B. special duties
C. special duty
D. special

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