25.豬離乳後多系統消耗症候群(postweaning multisystemic wasting syndrome)的病原為?
(A)豬第II型環狀病毒
(B)假性狂犬病病毒
(C)放線桿菌
(D)鏈球菌
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統計: A(1691), B(38), C(14), D(58), E(0) #854209
統計: A(1691), B(38), C(14), D(58), E(0) #854209