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what is a class f fire
what is a class f fire extinguisher
class f fires include
what is a class a fire
class f fires relate to what substance
what is considered a class a fire
which type of fire is class a
what is a class f
class a fire definition
class a fire means
what is a class f fire, what is a class f fire extinguisher, class f fires include, what is a class a fire, class f fires relate to what substance, what is considered a class a fire, which type of fire is class a, what is a class f, class a fire definition, class a fire means
