单项选择题
Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called（）.
A.list B.heel C.trim D.flotation
单项选择题 For a ship with longitudinal inclination，an increase in GML causes（）.
单项选择题 The geometric center of the waterplane area is called the（）.
单项选择题 Semisubmersibles A and B are identical. However，A is more tender than B. This means that A relative to B has a（）.
