29.酸性食品與低酸性食品之pH界限為
(A)3.6
(B)4.6
(C)5.6
(D)6.6
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統計: A(1), B(2), C(0), D(0), E(0) #2899848
統計: A(1), B(2), C(0), D(0), E(0) #2899848