單項(xiàng)選擇題

That is the （）(污水井).

A. bilge well
B. ballast water
C. fresh water
D. sea water

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單項(xiàng)選擇題

It is a （）(壓載水) tank.

A. bilge water
B. ballast water
C. fresh water
D. sea water

單項(xiàng)選擇題

From the waterline to the ship’s（）(底部) is called draft.

A.top
B.bridge
C.bottom
D.middle