38.下列那一亞群的家禽白血病病毒最容易水平傳播?
(A)A
(B)D
(C)F
(D)J
答案:登入後查看
統計: A(559), B(97), C(110), D(1415), E(0) #2743568
統計: A(559), B(97), C(110), D(1415), E(0) #2743568