单项选择题
All of the following can be determined by use of a stabilogauge EXCEPT（）.
A.metacentric height B.mean draft C.moment to trim one inch D.deadweight
单项选择题 An unstable upright equilibrium position on a vessel means that the metacenter is（）.
单项选择题 An upright vessel has negative GM. GM becomes positive at the angle of loll because the（）.
单项选择题 At all angles of inclination，the metacenter is（）.
