(?)最易感染羊球虫病,而且症状严重,死亡率也高。A.妊娠母羊B.羔羊C.种公羊D.产羔母羊E.青年羊

作者: rantiku 人气: - 评论: 0
问题 (?)最易感染羊球虫病,而且症状严重,死亡率也高。
选项 A.妊娠母羊 B.羔羊 C.种公羊 D.产羔母羊 E.青年羊
答案 B
解析

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