13 下列何項病原不是豬呼吸道疾病複合症(porcine respiratory disease complex;PRDC)病因之一?
(A)Pasteurella multocida
(B)Actinobacillus pleuropneumoniae
(C)Salmonella typhimurium
(D)porcine reproductive and respiratory syndrome virus
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統計: A(23), B(49), C(390), D(27), E(0) #1179319
統計: A(23), B(49), C(390), D(27), E(0) #1179319