單項(xiàng)選擇題A hook that will release quickly is a（）.

A.longshore hook
B.margin hook
C.marginal hook
D.pelican hook


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1.單項(xiàng)選擇題A hygroscopic cargo is define as a cargo（）.

A.capable of absorbing moisture in the form of a gas
B.capable of giving off moisture in the form of a liquid
C.that is shipped in a liquid stste
D.that will ignite in contact with water

2.單項(xiàng)選擇題A negative metacentric height（）.

A.will always cause a vessel to capsize
B.should always be immediately corrected
C.always result from off-center weights
D.All of the above are correct

3.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

4.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

5.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