When sailing ill cold zones _______should be drain
When sailing ill cold zones,_______should be drained of water.
A.the ventilation pipe
B.the water line for fire fighting on the deck
C.the fuel oil line
D.the water supplying line in bath room
请帮忙给出正确答案和分析，谢谢！
参考解答
488***779
2024-06-14 19:59:28
正确答案：B
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