單項(xiàng)選擇題

A system of cleaning the tanks by washing them with the cargo of crude oil while it is being discharged is known as（）.

A.cow
B.lot
C.cbt

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單項(xiàng)選擇題

A vessel emitting harmful substances into the air or spilling oil into the sea is a（）.

A.polluter
B.emitter
C.spiller
D.oiler

單項(xiàng)選擇題

A vessel restricted by its ability to manoeuver by the nature of its work or its deep draft is（）.

A.hampered vessel
B.giving way vessel
C.vessel not under control
D.disabled vessel

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