【Daily Question】2015.08.19 Medium Classification (Top 100 replies + 2 wealth points; additional 3–8 wealth points for correct answers)

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This post was last edited by zzhaichuan on 2015-8-20 08:14. The Mechanical Section has introduced the \"One Question per Day\" feature, which not only helps to foster an active atmosphere for technical discussions and guide the direction of such exchanges but also provides users with financial rewards, enabling them to experience various cool features. The ammonia mentioned in standard HG20660-2000 is a toxic, colorless substance with an irritating odor; it constitutes a ( ) hazard. A. Highly hazardous B. Moderately hazardous C. Slightly hazardous. The answer is B. Please note: we will close this thread after 24 hours, and at that time we will announce the best response as well as the answer and its explanation. Charisma Reward: If you post a topic in this section within two days to provide a detailed explanation or discussion of the knowledge points related to this question, please reply or leave a comment in this post to inform us, and we will have a moderator award you charisma points. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights and opinions. After registration, we will rank participants based on the content of their posts: the last-place contestant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score earning +5 charm. http://bbs.hcbbs.com/thread-1381938-1-1.html Earning wealth by inviting friends http://bbs.hcbbs.com/thread-1389240-1-1.html [Mechanical Section] Collection of essential knowledge 【Seeking manufacturer sponsorship】 (long-term campaign)