【Daily Question】Utilities - Water Supply and Drainage - 20200107
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Among the following statements regarding the selection of building fire extinguishers, which one is incorrect? A. Chemical foam extinguishers should be used to combat Class B fires involving polar solvents. B. When selecting a fire extinguisher, the competence of the person who will use it must be taken into consideration. C. Ammonium phosphate dry powder and halon-type extinguishers should be used to combat Class A, B, C fires as well as electrical fires. D. Halon-type extinguishers should not be used in locations where their installation is not necessary. Answer: A
A. Chemical foam extinguishers should be used to combat Class B fires involving polar solvents