51.下列何者為引起牛壞疽性肌肉炎(gangrenous myositis)的主要病原?
(A)Clostridium perfringens type C
(B)Clostridium tetani
(C)Clostridium botulinum
(D)Clostridium chauvoei
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統計: A(320), B(111), C(81), D(1881), E(0) #2038798
統計: A(320), B(111), C(81), D(1881), E(0) #2038798