The center of flotation of a vessel is（）.<br>A:the center of volume of the immersed portion of the vessel<br>B:the center of gravity of the water plane<br>C:that point at which all the vertical downward forces of weight are considered to be concentrated<br>D:that point at which all the vertical upward forces of buoyancy are considered to be concentrated

The center of flotation of a vessel is（）.
A:the center of volume of the immersed portion of the vessel
B:the center of gravity of the water plane
C:that point at which all the vertical downward forces of weight are considered to be concentrated
D:that point at which all the vertical upward forces of buoyancy are considered to be concentrated

出自：海船船员证

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