经土壤传播的意义取决于（　　）A.病原体在土壤内的存活力B.个体与土壤的接触机会C.个人卫生习惯D.B +CE.A +B +C

作者: rantiku 人气: - 评论: 0

问题经土壤传播的意义取决于（　　） A.病原体在土壤内的存活力 B.个体与土壤的接触机会 C.个人卫生习惯 D.B +C E.A +B +C

选项

答案 E

解析

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