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
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.
单项选择题 The height of the metacenter above the keel will vary depending on the（）.
