单项选择题

In small angle stability,the metacenteric height（）.

A.is found in the hydrostatic tables for a level vessel
B.multiplied by the displacement yields the righting moment
C.is always positive
D.is calculated by subtracting KG from KM

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单项选择题

In snall 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

单项选择题

In the first 24 hours after abandoning a vessel , water should be given only to personnel who are（）.

A.thirsty
B.sick or injured
C.wet
D.awake