文档介绍：饮水安全调查报告【新疆机电职业技术学院】 XX年暑假社会实践报告机械工程系09模具设计与制造班杨洪业XX-8-20 写在前面-1- 目录写在前面...........................................................................................................................-1-目录.............................................................................................................................-2- ........................................................................................................................-4- 【项目概况】..........................................................................................................-4- ........................................................................................................................-4- 【新闻链接】..........................................................................................................-4- ........................................................................................................................-7- 调查地点地理概况................................................................................................-7- 调查方式................................................................................................................-8- 集中问卷调查.................................................................................................-8- 分散抽样调查...............................................................................................-14- 随机实地取样...............................................................................................-14- ......................................................................................................................-14- 分析总结..............................................................................................................-14- ..............................................................................................................................-18- 附录一:问卷调查原始调查表........................................................................-18- 附录二:随机实地取样图片.................