A.熱傳導(dǎo) B.熱輻射 C.熱蔓延 D.熱對(duì)流
A.30% B.50% C.60% D.80%
A.物體靜電放電 B.火石摩擦打火 C.人體衣物靜電打火 D.人體積聚靜電對(duì)物體放電打火