["甲醇の每日一题2",,"触媒触発前に合成ガスを切り替える前に、放散ガスを閉じ切る必要がある理由は(　　)です。A、システムが超圧になるのを防ぐB、システムが急激に降�压するのを防ぐC、触媒が超温するのを防ぐD、、触媒が冷却するのを防ぐB",","","","",","",""]

2019-04-09View Original

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合成系统切合成气前，要求关闭驰放气的原因是(　　)。 A、防止系统超压 B、防止系统急剧降压 C、防止触媒超温 D、防止触媒降温 B

Reply #22019-04-09

B、防止系统急剧降压

Reply #32019-04-09

合成系统切合成气前，要求关闭驰放气的原因是(　B　)。 A、防止系统超压 B、防止系统急剧降压 C、防止触媒超温 D、防止触媒降温

Reply #42019-04-09

B、防止系统急剧降压

Reply #52019-04-10

B、防止系统急剧降压

Reply #62019-04-10

B、防止系统急剧降压

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