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單項(xiàng)選擇題

A neutral equilibrim position for a vessel means that the metacenter is（）.

A.lower than the keel
B.at the same height as the center of gravity
C.exactly at midships
D.at the center of the waterplane area

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單項(xiàng)選擇題

A new technique（）,the producity of loading as a whole increased by 20 percent.

A.working out
B.having been worked out
C.having worked out
D.to have been worked out

單項(xiàng)選擇題

A partial deck in a hold is called a (an)（）.

A.weather deck
B.orlop deck
C.shelter deck
D.main deck

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