A.質(zhì)量分?jǐn)?shù)為2%的漂白粉水溶液 B.質(zhì)量分?jǐn)?shù)為0.5%的過氧乙酸溶液 C.質(zhì)量分?jǐn)?shù)為4%的來蘇兒溶液 D.質(zhì)量分?jǐn)?shù)為1%的漂白粉水溶液
A.10min B.20min C.30min D.60min
A.5~10 B.10~15 C.15~20 D.25~30