【Daily Question No. 029】2017.08.05
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【Daily Question No. 029】August 05, 2017: A positive-pressure air respirator is mainly composed of five parts: a high-pressure gas cylinder, a back strap, a pressure regulator, an air supply valve, and ( ). A. Full-face mask B. Flame retardant C. Medium-pressure conduit D. Sealing structure. The reference answers will be visible after clicking *reply*; scoring is possible by identifying the key points. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Zone – “Creative Ideas for Energy Savings” campaign (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum Website)
A positive-pressure air respirator is mainly composed of five parts: a high-pressure gas cylinder, a backpack, a pressure regulator, an air supply valve, and (A). A、Full-face mask B、Flame retardant C、Medium-pressure conduit D、Sealing structure