79.通常用來做antiseptic用途的H2O2濃度約為多少?
(A)30%
(B)10%
(C)3%
(D)0.3%
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統計: A(212), B(179), C(763), D(62), E(0) #1033134
統計: A(212), B(179), C(763), D(62), E(0) #1033134