请在下方输入要搜索的题目：

The ubiquitous problems of wastewater treatment facilities in rural areas

A、insufficientpipelinenetwork;
B、lowcollectionrateofwastewater;
C、outdatedtreatmenttechniquesresultinginmostofthewastewaterbeingdischargedarbitrarilywithoutanytreatment;
D、N/A

发布时间：2025-12-22 00:04:30

推荐参考答案 ( 由题搜搜官方老师解答 )

答案：insufficient pipeline network ■low collection rate of wastewater ■outdated treatment techniques resulting in most of the wastewater being discharged arbitrarily without any treatment