杀灭人粪尿中病菌和虫卵的有效而环保的方法是     A.焚烧     

杀灭人粪尿中病菌和虫卵的有效而环保的方法是

    A.焚烧       B. 高温堆肥      C. 昆虫杀灭   D.喷洒杀虫剂

答案

B

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