Daily Fire Safety Question (12.6)
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1. In the selection of automatic sprinkler systems, wet systems should be used in areas where the environmental temperature is ( ) A. below 4°C, or above 70°C. B. Not less than 4°C and not more than 70°C. C. Not less than 0°C and not more than 70°C. D. Below 0°C, or above 70°C. 2. The material coefficient of a carbon dioxide fire extinguishing system refers to the conversion factor of the designed carbon dioxide concentration for combustibles to the carbon dioxide concentration of ( ). A、30% B、34% C、35% D、33% Reference **1.B 2.B
1.B. Not less than 4°C and not more than 70°C. 2.B, 34%