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This post was last edited by Green Lotus on 2017-8-29 at 10:59. To increase the popularity of this section, a daily question activity has been launched; the goal 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/1.gif http://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be announced in two days. Multiple-choice question: When water at 100°C turns into steam at 100°C, what does it absorb? ( ) A. Sensible heat B. Latent heat C. Both sensible heat and latent heat. Answer: B. Petrochemical sector – “Creative Ideas for Energy Saving” campaign (the second phase is currently in progress): http://bbs.hcbbs.com/thread-1666758-1-1.html. “My Technical Upgrades” in the coal chemical industry in 2017: http://bbs.hcbbs.com/thread-1786290-1-1.html. [Daily Question] Summary post on catalytic coking and reformed oil blending in 2017: http://bbs.hcbbs.com/thread-1811219-1-1.html