单项选择题
A.center of gravity B.center of buoyancy C.center of flotation D.metacenter
A continual worsening of the list or trim indicates（）.A...
单项选择题A continual worsening of the list or trim indicates（）.
A.negative GM B.progressive flooding C.structural failure D.an immediate need to ballast
（）we have worked out the loading plan，we shall start do...
单项选择题（）we have worked out the loading plan，we shall start doing more revision work.
A.For now B.Ever since C.Now that D.By now
（）refers to the tendency of a body of the ship to retur...
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.
A.Stability B.Responsibility C.Liability D.Visibility
