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單項(xiàng)選擇題

When cargo is shifted from the main deck into the lower hold of a vessel,（）.

A.The metacenter will move downward
B.The GM will increase
C.The center of buoyancy will move upward
D.The list of the vesel will become great

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單項(xiàng)選擇題

When liquid is free to move transversely in a tank, the effect is called（）.

A.Free communication
B.Free fensity
C.Free surface
D.Negative GM

單項(xiàng)選擇題

When the truck does not work, the driver should（）engines.

A.turn on
B.turn off
C.shut up
D.close

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