Issue 11 and Volume 92.

PROMOTIONAL STUDY COURSE Herein is presented e series of definitions, questions and answers designed to aid fire department officers in preparing themselves for promotional examinations. In this department, which appears monthly, will be included questions typical of examinations held throughout the country. Answers to Questions Cooling the burning materials, (quenching), smothering the fire by excluding oxygen, and snuffing the fire out. The snuffing-out process is rarely used, being confined largely to gas and oil well fires. Carbon dioxide. Steam. It is effective chiefly in confined spaces, where the steam may be made to completely envelope the burning material. Carbon dioxide. Fire buckets, soda and sawdust, wet burlap bags, pump tanks, and sand fire pails. Yes. No. The solution in the body of the extinguisher is a non-freezing one, consisting of calcium chloride and water, whereas in the soda and acid extinguisher the solution is one of bicarbonate of soda and…

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