单项选择题

Adult mites of Psoroptes is smaller than adult mites of Sarcoptes.

A.正确
B.错误
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Rabbit mange of can be infected and spread by contact.
A.正确
B.错误
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The preventive drugs of avian coccidiosis include ivermectin, maduramicin ammonium premix and diclazuril premix etc.
A.正确
B.错误
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