单项选择题
The point to which your vessel’s center of gravity (G) may rise and still permit the vessel to have positive stability is called the（）.
A.metacentric point B.metacenter C.metacentric radius D.tipping center
单项选择题 The magnitude of a moment is the product of the force and（）.
单项选择题 The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
单项选择题 The amount of freeboard which a ship possesses has a tremendous effect on its（）.
