單項選擇題The stability of a semisubmersible ship would be seriously reduced if flooding occurred in the（）.

A.submerged hulls
B.column void spaces
C.dry mud tanks
D.ballast tanks


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1.單項選擇題The moment of a force is a measure of the（）.

A.turning effect of the force about a point
B.instantaneous value of the force
C.stability characteristics of the vessel
D.center of gravity location

2.單項選擇題The maximum angle at which the intact stability curves are valid for ship’s is the angle for（）.

A.the limit of positive stability
B.the limit of small-angle stability
C.maximum offset
D.downflooding

3.單項選擇題The important initial stability parameter，GM，is the（）.

A.metacentric height
B.height of the metacenter above the keel
C.height of the center of buoyancy above the keel
D.height of the center of gravity above the keel

4.單項選擇題The greatest effect on stability occurs from loose liquids flowing（）.

A.from side to side in the tanks of the vessel
B.from fore to aft in the tanks of a vessel
C.in and out of a vessel that is holed in a wing tank
D.in and out of a vessel that is holed in a peak tank

5.單項選擇題The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.

A.volume of liquid in the tank
B.volume of displacement of the vessel
C.location of the tank in the vessel
D.height of the center of gravity of the vessel