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單項(xiàng)選擇題

The waterplane area is described as the intersection of the surface of the water in which a vessel floats and the（）.

A.baseline
B.vertical reference plane
C.hull
D.horizontal reference plane

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單項(xiàng)選擇題

The volume of watertight spaces of a vessel above its waterline is the vessel’s（）.

A.free surface
B.marginal stability
C.reserve buoyancy
D.freeboard

單項(xiàng)選擇題

The upward pressure of displaced water is called（）.

A.buoyancy
B.deadweight
C.draft
D.freeboard

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