According to this passage if the cylinder non-ret
According to this passage, if the cylinder non-return valve were not leaky
A.an explosion would not be caused
B.there still would be a danger of explosion
C.oil would not deposit in the air pipe
D.pipe lines would not have to be drained
请帮忙给出正确答案和分析，谢谢！
参考解答
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2024-06-15 00:01:24
正确答案：B
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