单项选择题

A floating ship with an initial negative metacentric height（）.

A.will capsize
B.will incline further
C.may lie at an angle of loll
D.may be initially level

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A capsized small sail vessel is best righted when what part of the vessel is downwind?（）

A.Stern
B.Bow
C.Centerboard
D.Mast
单项选择题
A cable used by helicopters for lifting or lowering persons in a pick-up operation is a（）.

A.Hoist
B.Rope
C.Cable
D.Line
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