40.Pacheco's disease的病原為何?
(A)腺病毒
(B)冠狀病毒
(C)疱疹病毒
(D)環狀病毒
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統計: A(644), B(200), C(961), D(549), E(0) #1588621
統計: A(644), B(200), C(961), D(549), E(0) #1588621