单项选择题
A.before the gripes are removed
B.before loading the passengers
C.after loading the passengers
D.after the boat is afloat
单项选择题 The total quantity of oil discharge into the sea（）for existing tankers 1/15000 of the total quantity of the particular cargo or which the residue formed a part（）.
单项选择题 The total leg load reactions on an independent leg，self-elevating unit include static and（）.
单项选择题 The terminal stuff tallies the cargo mainly before the ship’s（）.