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單項(xiàng)選擇題

Annual inspection of vessel cranes shall be conducted by（）.

A.HAS
B.the person in charge
C.a qualified inspector
D.the crane operator

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單項(xiàng)選擇題

Another name for coal naphtha that would appear on a dangerous cargo manifest is（）.

A.benzene
B.tar
C.middle oil
D.toluene

單項(xiàng)選擇題

Any vessel in need of carring out deck washing must be（）by the department concerned beforehand.

A.requested
B.allowed
C.approved
D.inquired

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