单选题In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.Acenter of gravityBmetacenterCcenter of flotationDkeel
单选题
In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.
A
center of gravity
B
metacenter
C
center of flotation
D
keel
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