A.細(xì)水霧滅火系統(tǒng) B.氣體滅火系統(tǒng) C.泡沫滅火系統(tǒng) D.水噴霧滅火系統(tǒng)
A.4℃ B.5℃ C.8℃ D.10℃
A.20% B.50% C.60% D.80%