71.下列何者感染母牛常造成肉芽腫性乳房炎?
(A)Streptococcus agalactiae
(B)Enterobacter aerogenes
(C)Escherichia coli
(D)Nocardia asteroides
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統計: A(612), B(117), C(176), D(2013), E(0) #1839099
統計: A(612), B(117), C(176), D(2013), E(0) #1839099