问题
单项选择题
A partially full tank causes a virtual rise in the height of the（）.
A.metacenter
B.center of buoyancy
C.center of flotation
D.center of gravity
答案
参考答案：D
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A partially full tank causes a virtual rise in the height of the（）.
A.metacenter
B.center of buoyancy
C.center of flotation
D.center of gravity
参考答案：D