【Daily Question No. 54】April 22, 2017

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In distillation classification, based on operating pressure, it can be divided into ( ), ( ), and ( ) three types. Correct answers: atmospheric distillation, vacuum distillation, pressure distillation. http://bbs.hcbbs.com/static/image/hrline/4.gif The Petrochemical Section – an event aimed at generating new energy-saving ideas (“Creative Thinking” campaign); sponsors are being sought (highest returns ever). http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors for this event are being recruited; those interested should contact the event organizer. The Petrochemical Processing Edition – an event to share pictures of chemical processing equipment has started! A vast amount of wealth, as well as Hachuan coins, are waiting for you to claim them: http://bbs.hcbbs.com/thread-1760733-1-1.html. “Petroleum and Chemicals Section”: Notice regarding the collection of chemical technology materials: http://bbs.hcbbs.com/thread-1614796-1-1.html. http://bbs.hcbbs.com/hcdown/data/attachment/forum/201704/07/123053embbjkok61hz6vvz.jpg.thumb.jpg. [Haixin Chemical Cup ★ Spring has arrived for Hachuan Chemicals] Summary post of the 2017 scenery-sharing event (you can take a look at the local scenery posted by users from various places in your free time): http://bbs.hcbbs.com/thread-1766484-1-1.html