单项选择题

To prevent loss of stability from free communication flooding you should（）.

A.close the cross-connection valve between the off-center tanks
B.completely flood high center tanks
C.ballast double bottom wing tanks
D.close any opening to the sea in an off-center tank

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单项选择题

To improve your vessel’s stability in a hazardous situation，you should（）.

A.ballast deep tanks if they are slack
B.transfer ballast athwartships
C.pump out double bottoms
D.fill double bottoms from deep tanks

单项选择题

To ensure the ship’s general stability，（）.

A.she's loaded a little deeper forward
B.she's loaded a little deeper aft
C.she has not any ballast at all
D.the cargo is properly distributed throughout the ship

单项选择题

The vertical distance between G and M is used as a measure of（）.

A.stability at all angles of inclination
B.initial stability
C.stability at angles less than the limit of positive stability
D.stability at angles less than the downflooding angle