【Daily Question No. 050】2017.02.19

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This post was last edited by 955559 on 2017-7-31 16:19. [Daily Question No. 050] February 19, 2017: What is the explosion limit of hydrogen sulfide in air? A. 3.0%~40.0% B. 4.0%~46.0% C. 7.0%~46.0% D. 30.0%~40.0% Answer: *Just identifying the key point is sufficient to earn points.* (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) B Petrochemical Area – “Creative Ideas for Energy Savings” event: http://bbs.hcbbs.com/thread-1666758-1-1.html The New Normal Cup – Voting for the top 10 members of HaiChuan in 2016 is now underway; vote for the member you care most about (please cast your valuable vote for those in the Petrochemical Area). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary post of Q&A questions for 2017 (updates available): http://bbs.hcbbs.com/thread-1657793-1-1.html Summary post of daily questions for 2017 (updates available): http://bbs.hcbbs.com/thread-1657794-1-1.html Summary post of Q&A questions from 2016 (updates completed): http://bbs.hcbbs.com/thread-1597792-1-1.html Third-phase selection of outstanding management members at HaiChuan: http://bbs.hcbbs.com/thread-1655902-1-1.html Petrochemical Area – “Creative Ideas for Energy Savings” event: http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are up for grabs. Summary post collecting chemical industry technical materials from the “Petrochemical Section”: http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes are waiting for you (Source: HaiChuan Chemical Forum)