【Daily Question】Sulfur Technical Version 20170827

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To increase the popularity of this section, a daily quiz activity has been launched. The purpose of this activity is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, they can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 wealth points ； Note: Questions from the same day will receive full feedback if answered on the same day; answers given the next day will earn 5-8 wealth points. This post is valid for 48 hours. http://bbs.hcbbs.com/static/image/hrline/4.gif Multiple-choice question: The allowable concentration of hydrogen sulfide in the facility is ≤(　　) mg/m3. A、 1 B、 5 C、 10 D、 20 Answer: C Petrochemical sector – Innovative ideas for energy savings: “Creative Thinking” campaign (the second phase is currently in progress) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017: Coal chemical industry – “My technical improvements” http://bbs.hcbbs.com/thread-1786290-1-1.html [Daily question] Summary post on sulfur-related technologies for 2017 http://bbs.hcbbs.com/thread-1811578-1-1.html