氨蒸发器进行氮气置换,第一次充氮压力达到()MPa时停止充氮。A.0.5 B.0.6

题型:单项选择题

问题:

氨蒸发器进行氮气置换,第一次充氮压力达到()MPa时停止充氮。

A.0.5

B.0.6

C.0.7

D.0.4

考点:硝酸生产工硝酸生产工技师、高级技师硝酸生产工技师、高级技师题库
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