The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.<br>A:only when there is positive stability<br>B:only when there is negative stability<br>C:only when there is neutral stability<br>D:at all times

The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
A:only when there is positive stability
B:only when there is negative stability
C:only when there is neutral stability
D:at all times

出自：海船船员证

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