The analyses of quality problem is the precondition of study out correct disposal scheme of quality accident, and it is the gist of defining accident duty.
施工项目质量问题的分析，是正确拟定质量事故处理方案的前提，是明确质量事故责任的依据。
Urban garbage disposal is a very difficult problem of urban management. Selection and distribution of garbage disposal field affect environmental quality.
城市生活垃圾的处理为城市管理的一大难题，垃圾填埋场地的合理选择与布局直接关系到场地四周的环境质量。
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