单项选择题
Bags are usually stowed in between the bulk grain().
A.to ventilate the hold
B.to separate the cargo
C.to replace shifting boards
D.to facilitate stowage
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A.head-on situation
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C.overtaking situation
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Chart/Publication correction record Card system ensures that every chart is properly corrected().
A.in use
B.prior to use
C.after use
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