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type b-i fire extinguisher
type b fire extinguisher
class a b c fire extinguisher type
type b fire extinguisher definition
fire extinguisher type a b c
class b fire extinguisher type
what is a type b fire extinguisher
type b-i fire extinguisher, type b fire extinguisher, class a b c fire extinguisher type, type b fire extinguisher definition, fire extinguisher type a b c, class b fire extinguisher type, what is a type b fire extinguisher
