单项选择题
A.ballast deep tanks if they are slack
B.transfer ballast athwarships
C.pump out double bottoms
D.fill double bottom from deep tanks
单项选择题 Upon the survey it is found the deck control valve of the fore peak tank could not be（）.
单项选择题 Upon underwater detection, there were no apparent defects on the bottom plates, bilge keels,rudder and propeller of the said vessel. This kind of wording usually appeared on（）.
单项选择题 We have come on board to check with you on the main ltems of repairs as stated in the（）.