【Daily Question】Sulfur Technical Edition, July 21, 2017

Thread Content

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, you 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. True or False: ( ) 70% of the air is nitrogen, so nitrogen does not cause death by asphyxiation. Answer: × Correct answer: Industrial nitrogen has a very high purity, generally exceeding 99%, and it contains very low levels of oxygen, which can lead to death from asphyxiation. Petroleum Chemical Industry Zone—The “Creative Ideas for Energy Saving” Event (Second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017: “My Technical Upgrades” in the Coal Chemical Industry http://bbs.hcbbs.com/thread-1786290-1-1.html