问题
单项选择题
When the（）is large, the ship is stiff; and when it is small, she is tender.
A.GM
B.free surface
C.longitudinal center of gravity
D.transverse center of gravity
答案
参考答案：A
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When the（）is large, the ship is stiff; and when it is small, she is tender.
A.GM
B.free surface
C.longitudinal center of gravity
D.transverse center of gravity
参考答案：A
