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單項(xiàng)選擇題

The average of the forward and after drafts is the（）.

A.mean draft
B.true mean draft
C.mean of the calculated drafts
D.draft at the center of flotation

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單項(xiàng)選擇題

The angle to which a floating ship，with a negative initial metacentric height，lies while at rest in still water is the angle of（）.

A.trim
B.yaw
C.heel
D.loll

單項(xiàng)選擇題

Some cargoes are（）in weight but（）in size.

A.lighter／large
B.light／larger
C.lighter／larger
D.light／large

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