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(xiàng)選擇題

A large oil fire is best extinguished with（）

A.soda acid
B.foam
C.CO₂
D.sand