单项选择题

A ship with the TCG off the longitudinal centerline inclines to an angle of（）.

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

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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
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
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