單項選擇題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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1.單項選擇題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

2.單項選擇題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

3.單項選擇題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

4.單項選擇題The trim and stability booklet must be approved by the（）.

A.International Maritime Organization
B.National Cargo Bureau
C.Society of Naval Architects and Marine Engineers
D.United States Coast Guard

5.單項選擇題The time required to incline from port to starboard and back to port again is called（）.

A.initial stability
B.range of stability
C.inclining moment
D.rolling period