问题
单项选择题
Increasing free surfaces has the effect of raising the（）.
A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height
答案
参考答案：B
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Increasing free surfaces has the effect of raising the（）.
A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height
参考答案：B