Basic Knowledge of Ammonia Synthesis – One Question per Day 97
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This post was last edited by Yan Qiusheng on 2011-4-22 at 21:36. 1. When using a dry powder fire extinguisher (). A. Remove the safety pin first, B. Shake it upside down first, C. Press the handle first, D. Press the handle first then remove the safety pin. 2. The primary measure for determining whether the lubricating oil in a centrifugal pump has deteriorated is (). A. Stop for inspection, B. Visual inspection, C. Take samples for oil analysis, D. Continue using. We hope all Sea View friends will participate actively; the first 50 responders will definitely receive a reward. Please reply with the answer hidden; otherwise it will be invalid. Hidden method: http://bbs.hcbbs.com/thread-492556-1-1.html Please do not edit after replying. Correct answers: 1. B, 2. B.
Reply 1# Yan Qiusheng B D
Reply 1# Yan Qiusheng A
Reply 1# Yan Qiusheng AC