单项选择题
A floating vessel will behave as if all of its weight is acting downward through the（）.
A.center of gravity B.center of buoyancy C.center of flotation D.metacenter
单项选择题 A continual worsening of the list or trim indicates（）.
单项选择题 （）we have worked out the loading plan，we shall start doing more revision work.
单项选择题 （）refers to the tendency of a body of the ship to return to its original position after it is displaced therefrom.
