A.將質(zhì)量分?jǐn)?shù)為20%的漂白粉溶液倒人抽水馬桶 B.用質(zhì)量分?jǐn)?shù)為1%的含氯消毒液擦洗消毒 C.用質(zhì)量分?jǐn)?shù)為10%的含氯消毒液擦洗消毒 D.將質(zhì)量分?jǐn)?shù)為80%的漂白粉溶液倒入抽水馬桶
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