单项选择题
Horizontal transverse motion of a vessel is known as（）.
A.pitch B.surge C.sway D.heave
单项选择题 Horizontal fore or aft motion of a vessel is known as（）.
单项选择题 Heave is motion along the（）.
单项选择题 For a vessel with list，a decrease in GMT will cause the angle of inclination to（）.
