单选题:当堆肥温度升到45℃以上时,即进入高温阶段。在这一阶段,( )成为主体。 题目分类:基础考试 题目类型:单选题 查看权限:VIP 题目内容: 当堆肥温度升到45℃以上时,即进入高温阶段。在这一阶段,( )成为主体。 参考答案: 答案解析:
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