勤洗手和经常对环境惊醒消毒是预防传染病得有效途径.某消毒液为无色液体,用红色石蕊试纸检验,发现试纸先变蓝后褪色.则该消毒液的主要成分可能是

A.70%酒精                    B.NaClO                     C.H₂O₂                   D.KMnO₄

A.70%酒精               B.NaClO                 C.H₂O₂              D.KMnO₄

A.70%酒精?          B. NaClO               C.H₂O₂?           D.KMnO₄?

A.KMnO₄酸性溶液                               B.H₂O₂

C.NaClO                                            D.NH₃·H₂O

A.KMnO₄            B.H₂O₂           C.NaClO            D.NH₃·H₂O