Question

question #5
multiple choice
what other feature do class b foams and dry chemical possess to aid in the suppression of jet - fu
they increase volatility of the fuel.
they require different hoses and nozzles.
they are more cost - efficient.
they decrease flammability of the fuel.

Explanation:

Class B foams and dry - chemical agents are used to suppress jet - fuel fires. Their main purpose is to reduce the fire - causing properties of the fuel. Increasing volatility would make the fuel more flammable, different hoses and nozzles are not related to the suppression mechanism, and cost - efficiency is not a feature related to fire suppression. Decreasing the flammability of the fuel helps in suppressing the fire.

Answer:

They decrease flammability of the fuel.