【Daily Question】 2016 07 12 Hydrogenation Sector

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【Daily Question】 July 12, 2016: In the hydrogenation sector, what is generally used as a medium for catalyst drying? A. Recycled hydrogen B. Recycled air C. Recycled steam D. Recycled nitrogen D 【Petrochemical section】Proposal for an activity involving adding prefixes to themes: http://bbs.hcbbs.com/thread-1573958-1-1.htm 【Petroleum and chemical industry section】Compilation of posts on “basic knowledge”: http://bbs.hcbbs.com/thread-1557057-1-1.html 【Petrochemical section】Notice regarding the large-scale event “I’m saving energy; where are you?”: http://bbs.hcbbs.com/thread-1579199-1-1.html 【Surprises when spending money】: http://bbs.hcbbs.com/thread-1599086-1-1.html 【I’m spending money; where are you? @I’m saving energy; where are you?】 http://bbs.hcbbs.com/thread-1580307-1-1.html 【Spending Money】 http://bbs.hcbbs.com/thread-1580307-1-1.html