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單項選擇題

In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.

A.center of gravity
B.center of flotation
C.metacenter
D.metacentric height

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單項選擇題

In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.

A.center of gravity
B.metacenter
C.center of flotation
D.keel

單項選擇題

Increasing free surfaces has the effect of raising the（）.

A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height