One Question per Day on Synthetic Ammonia – Multiple Choice 304 (Saturday, 26-11-2011)

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This post was last edited by TH373637 on 2011-11-26 at 11:53. Multiple-choice questions: 1. Which of the following represents correct safety practices? ( ) (A) Smoking while repairing equipment (B) Working at heights without a safety belt (C) Sealing up septic tanks (D) Failing to purge certain pipelines). 2. For equipment and pipelines that handle certain media, they should first be flushed with water and then purged with an inert gas. ( ) (A) Salt (B) CO2 (C) CH4 (D) Acids and bases). The purpose of the “One question per day on basic knowledge of ammonia synthesis” activity is to review the knowledge we have already learned, to improve and strengthen everyone’s fundamental theoretical knowledge through answering questions, to help people recall what they know, to restore memory for those who have forgotten, and to encourage discussion on controversial topics in order to make progress together. The top 50 answerers will definitely receive a reward. Those who simply state the reasons for their choice will be given additional points as appropriate! Please reply with the answer hidden; otherwise it will be invalid. To hide and view the method: http://bbs.hcbbs.com/thread-492556-1-1.html-. Please do not edit after replying. Answer C; D