单项选择题
A.stability is positive
B.neutral equilibrium exists
C.the load line is not submerged
D.intact stability curves are valid
单项选择题 The angle of loll is a stability term which applies to a floating ship with（）.
单项选择题 Stability is determined principally by the location of two points in a vessel: the center of buoyancy and the（）.
单项选择题 Stability is determined principally by the location of the center of gravity and the（）.