单项选择题

GM cannot be used as an indicator of stability at all angles of inclination because（）.

A.M is not fixed at large angles
B.there is no M at large angles
C.G is not fixed at large angles
D.there is no G at large angles

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单项选择题
For small angles of inclination，if the KG were equal to the KM，then the vessel would have（）.

A.positive stability
B.negative stability
C.neutral stability
D.maximum stability
单项选择题
For a given displacement，the righting arm has its maximum value when（）.

A.KG is minimum
B.angle of inclination is a maximum
C.small-angle stability applies
D.KM is a minimum
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