39.下列那一病原造成牛的接觸傳染性胸膜肺炎?
(A)Mycoplasma mycoides
(B)Mycoplasma bovis
(C)Mycoplasma hyopneumoniae
(D)Mycoplasma hyorhinis
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統計: A(880), B(178), C(190), D(9), E(0) #855939
統計: A(880), B(178), C(190), D(9), E(0) #855939