单选题The center of flotation of a vessel is the point in the waterplane（）.Aabout which the vessel lists and trimsBwhich coincides with the center of buoyancyCwhich，in the absence of external forces，is always vertically aligned with the center of gravityDwhich is shown in the hydrostatic tables as VCB
单选题
The center of flotation of a vessel is the point in the waterplane（）.
A
about which the vessel lists and trims
B
which coincides with the center of buoyancy
C
which，in the absence of external forces，is always vertically aligned with the center of gravity
D
which is shown in the hydrostatic tables as VCB
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