43.下列何者較少引發豬間質性肺炎？
(A)porcine circovirus type 2
(B)porcine reproductive and respiratory syndrome virus
(C)Salmonella Choleraesuis
(D)Bordetella bronchiseptica

答案：登入後查看
統計： A(0), B(0), C(5), D(8), E(0) #3973162