单项选择题
For a floating vessel，the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
A.only when there is positive stability B.only when there is negative stability C.only when there is neutral stability D.at all times
单项选择题 For a floating vessel，the result of subtracting KG from KM is the（）.
单项选择题 For a vessel with transverse inclination，an increase in GMT causes（）.
单项选择题 For small angles of inclination，if the KG were equal to the KM，then the vessel would have（）.
