单选:裂解汽油加氢装置开车前置换氮气不能排放到火炬的主要原因是()。

题目内容:
裂解汽油加氢装置开车前置换氮气不能排放到火炬的主要原因是()。
A.气量大容易吹灭火炬
B.浪费能源
C.含氧量较高可能产生爆炸
D.氮气压力过高
参考答案:

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