78.下列何者為鸚鵡喙羽病(psittacine beak and feather disease)之病原?
(A)Chlamydophila spp.
(B)Clostridium spp.
(C)herpesvirus
(D)circovirus
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統計: A(519), B(11), C(55), D(1114), E(0) #942232
統計: A(519), B(11), C(55), D(1114), E(0) #942232