单项选择题
A.cargo
B.box
C.cargo and box
D.rate weight
单项选择题 On a vessel，multiplying a load’s weight by the distance of the load’s center of gravity above the baseline results in a(n)（）.
单项选择题 On a semisubmersible ship，reserve buoyancy is increased by the presence of void spaces above the waterline in the（）.
单项选择题 My drafts are 28 feet（）and 29 feet aft.