- Study guides, Class notes & Summaries

After selecting the appropriate extinguisher to use on a fire, the firefighter should: visually inspect the extinguisher. Wet chemical stored-pressure extinguishers are intended for use on _____ fires. Class K What types of materials do Class B fires involve? Combustible liquids and gases What is a characteristic of carbon dioxide (CO2) extinguishers? CO2 gas displaces oxygen to smother the fire How does chemical flame inhibition work to extinguish fire? Interrupts the chemical chain reactio...