无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

For which of the listed classes of fire combinations would carbon dioxide be most suitable as the extinguishing agent （）.

A.Class "A" and class "B"
B.Class "B" and class "C"
C.Class "A" and class " C"
D.Class "C", class "D", and class "E"

微信掃碼免費搜題