你可能感興趣的試題

Water is a very effective fire extinguishing agent because it（）

A.will remove all the toxic fumes from the air
B.has the greatest cooling ability
C.will leave no harmful residue
D.completely removes combustible vapors from the air

單項選擇題

A large oil fire is best extinguished with（）

A.soda acid
B.foam
C.CO₂
D.sand

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

Which one is not the personal safety equipment?（）

你可能感興趣的試題

Water is a very effective fire extinguishing agent because it（）

A large oil fire is best extinguished with（）