單項(xiàng)選擇題

A.Adding the KB and the BM
B.Subtracting the KB from the BM
C.Subtracting the GM from the KB
D.Adding the GM and the KB

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

A.the load line becomes submerged
B.a non-watertight opening is at still water level
C.offset becomes excessive
D.reserve buoyancy is a maximum