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When commencing cargo operations on a container ship，one cell at a hatch is generally discharged completely (to the bottom of the ship) before removing any containers from the adjoining cells to（）.
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

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出自：海船船员证

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