單項(xiàng)選擇題

A wind has caused a difference between drafts starboard and port. This difference is（）.

A.list
B.heel
C.trim
D.flotation

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單項(xiàng)選擇題

Deballasting a double bottom has what affect on KG?（）.

A.KG is increased
B.KG is decreased
C.KG is not affected
D.KG increases at light drafts and decreases at deep drafts

單項(xiàng)選擇題

For a floating vessel，the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.

A.only when there is positive stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times

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