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(502), B(88), C(98), D(1259), E(0) #2743568
統計: A(502), B(88), C(98), D(1259), E(0) #2743568