单项选择题
A.remove an existing list that would slow down cargo operations
B.initiate loading in conjunction with unloading at the hatch
C.improve stability during cargo operations
D.allow longshoremen easy access to the hatch
单项选择题 When clearing customs for a foreign voyage，which of the following is processed at the custom’s house and returned to the vessel? （）
单项选择题 When carrying a cargo of asphalt or molten sulfur，which are carried at temperatures of over 300°F，one of the biggest dangers is（）.
单项选择题 When cargo aboard a jack-up in transit becomes adrift，the tow vessel should be asked to （）.