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To increase the popularity of this section, a daily quiz campaign has been launched. The goal of this campaign 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. Fill-in-the-blank: Specific gravity of water and flammable liquids; water should not be used to extinguish them. Answer: Less than; insoluble in water. Petrochemical sector – “Creative Ideas for Energy Savings” 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 for 2017: http://bbs.hcbbs.com/thread-1811219-1-1.html
It has a density lower than that of water and is insoluble in water; it is a flammable liquid that cannot be extinguished using water.