The original equilibrium position is stable when（）.<br>A:metacentric height is positive<br>B:metacentric radius is positive<br>C:KG exceeds maximum allowable limits<br>D:free surfaces are excessive

The original equilibrium position is stable when（）.
A:metacentric height is positive
B:metacentric radius is positive
C:KG exceeds maximum allowable limits
D:free surfaces are excessive

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