Which classification of foam is used to suppress vapors from hazardous materials spills?
A) Low-expansion foam
B) High-expansion foam
C) Medium-expansion foam
D) Minimal-expansion foam

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The Answer of Which classification of foam is used to suppress vapors from hazardous materials spills?
A) Low-expansion foam
B) High-expansion foam
C) Medium-expansion foam
D) Minimal-expansion foam

Which Classification of Foam Is Used to Suppress Vapors from Hazardous