18.下列何種疾病目前已有區分受感染或疫苗免疫動物(differentiate infected from vaccinated animals, DIVA)的技
術?①豬瘟 ②口蹄疫 ③豬生殖與呼吸綜合症 ④豬假性狂犬病
(A)①②③
(B)①③④
(C)②③④
(D)①②④
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統計: A(299), B(271), C(182), D(1192), E(0) #2969942
統計: A(299), B(271), C(182), D(1192), E(0) #2969942