单选题Bilges may be pumped （）.Aon the outgoing tideBoverboard after darkCoverboard through an oily water separatorDanytime in an emergency, i-emain engine lube oil failure
单选题
Bilges may be pumped （）.
A
on the outgoing tide
B
overboard after dark
C
overboard through an oily water separator
D
anytime in an emergency, i-emain engine lube oil failure
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