单项选择题
A ship lists and trims about the（）.
A.center of gravity
B.center of buoyancy
C.center of flotation
D.centroid of the underwater volume
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相关考题
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单项选择题
A ship is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
A.positive
B.negative
C.zero
D.vertical -
单项选择题
A partially full tank causes a virtual rise in the height of the（）.
A.metacenter
B.center of buoyancy
C.center of flotation
D.center of gravity -
单项选择题
A neutral equilibrium 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
