A.80wB.75wC.70wD.60w
A.特別重大火災(zāi) B.重大火災(zāi) C.較大火災(zāi) D.一般火災(zāi)
A.0.8m,1.6m B.0.5m,1.6m C.0.5m,1.5m D.0.7m,1.6m