【Daily Question】Sulfur Technical Version 20171005

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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, you can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 wealth points ； Note: For questions from that day, answering correctly earns 10 wealth points; answering the next day earns 5–8 wealth points. This post is valid for 48 hours. http://bbs.hcbbs.com/static/image/hrline/4.gif True or False: The function of the water seal tank is to absorb the gases emitted from the top of the raw material tank; the absorbent liquid inside the tank is then returned to the raw material tank, thereby reducing environmental pollution ； When the raw material tank is under negative pressure, external air can enter the tank through the water seal tank, reducing the pressure difference between the inside and outside.