阿摩線上測驗
21. Which of the following active ingredient is most commonly used in liquid bleaches (Sanitizers)?
(A) NaCl
(B) NaClO
(C) NaClO2
(D) NaClO3
(E) NaClO4
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統計： A(2), B(63), C(2), D(2), E(3) #2356337
統計： A(2), B(63), C(2), D(2), E(3) #2356337
