49.下列何者內含大量自然抗體或免疫球蛋白?
(A)人工乳
(B)初乳
(C)代乳粉
(D)常乳
答案:登入後查看
統計: A(0), B(21), C(0), D(0), E(0) #2964635
統計: A(0), B(21), C(0), D(0), E(0) #2964635