文档介绍：several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measuremen农村经济社会可持续开展的制约因素。大局部垃圾未经处理，直接堆放在田头、路旁, 甚至抛掷到沟渠、水塘,影响环境卫生和农村景观。绝大局部生活污水未经处理直接渗入地下或直排沟渠、水塘。乡镇工业布局不当，工业污染突出。化肥、农药使用不合理造成的局部地区面源污染突出。综合利用措施滞后, 畜禽养殖污染日益凸显。农村环境保护的政策、法规、标准体系不健全。农村生态环境建设是关系中华民族生存和长远开展的根本大计。我国生态环境建设的重点在农村。广阔农村, 是淡水、耕地、林地、草原、生物等资源的最大腹地，是承载人口的主要场所，是实现可持续开展的主要环境依托。同时，与城市比拟， 农村资源节约、生态保护于环境治理线长面广，环境问题原因更为复杂、危害更为严重、治理更为困难。新农村建设的提出
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
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several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method