问题
单项选择题
Jettisoning weight from topside（）.
A.return the vesselto an even keel
B.reduces free surface effect
C.lowers the center of gravity
D.raises the center of buoyancy
答案
参考答案：C
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Jettisoning weight from topside（）.
A.return the vesselto an even keel
B.reduces free surface effect
C.lowers the center of gravity
D.raises the center of buoyancy
参考答案：C
