單項(xiàng)選擇題The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.

A.only when there is positive stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times


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1.單項(xiàng)選擇題The amount of freeboard which a ship possesses has a tremendous effect on its（）.

A.initial stability
B.free surface
C.stability at large angles of inclination
D.permeability

2.單項(xiàng)選擇題Load line regulations are designed to insure that a vessel has adequate structural strength and sufficient（）.

A.lifesaving equipment
B.stability
C.mooring tension
D.riser tension

3.單項(xiàng)選擇題In the absence of external forces，the center of gravity of a floating vessel is located directly above the（）.

A.metacenter
B.amidships
C.center of flotation
D.geometric center of the displaced volume

4.單項(xiàng)選擇題If the vertical center of gravity (VCG) of a ship rises 1.7 feet，the righting arm (GZ) for the various angles of inclination will（）.

A.decrease
B.increase
C.remain unchanged
D.be changed by the amount of GG' x cosine of the angle

5.單項(xiàng)選擇題From（）the information concerning the tons per inch or centimeter immersion of a vessel shall be usually found.

A.Stability curve
B.Deadweight scale
C.Table of Azimuth
D.Freeboard assignment