Daily Question 8.18
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While on the road, I’ve come up with some questions using my phone; the rewards for replies will be given later… 1. During the maintenance of chemical plants and facilities, hot work constitutes a highly dangerous type of activity. Among the following tasks, which one does not belong to hot work? A. Welding operations C. Grinding with a grinder B. Cutting operations D. Painting operations 2. The extinguishing agent that is widely used in portable fire extinguishers and fixed fire suppression systems at present is ( ). A. Water-based fire extinguishing agent B. Dry ice fire extinguishing agent C. Dry powder fire extinguishing agent D. Foam fire extinguishing agent
1. D. ------2、C