A.15ml/m3福爾馬林加7.5克高錳酸鉀 B.0.5%0.05%-0.2%的新潔而滅60 C.3%-5%的來(lái)蘇兒 D.0.1-1%漂白粉
A.30min B.15min C.2h D.5h
A.3 B.30 C.15 D.10