19 .____ The proteins that inactivate foreign bacterial and viruses are
(A) enzymes
(B) hormones.
(C) collagen.
(D) antibodies.

答案:登入後查看
統計: A(17), B(0), C(6), D(23), E(0) #1465763

詳解 (共 1 筆)

#2260653
感覺答案很奇怪  殺滅外來細菌的是抗體吧...
(共 24 字,隱藏中)
前往觀看
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