A.發(fā)光B.發(fā)煙C.發(fā)熱D.自由基鏈?zhǔn)椒磻?yīng)
A.高溫 B.電弧 C.明火 D.自燃引火源
A.A類火災(zāi)B.B類火災(zāi)C.C類火災(zāi)D.D類火災(zāi)