广东省技能大赛:保护水资源
http://ez.sm.fj.cninfo.net/hsweb/hs01g.htm
http://www.yijiao.rdedu.net/dissertation/rudong/xx/syxx/shuizhiyuan/main-1/main.htm
http://www.ntem.com.cn/kjjx4/0608_rd_1.htm
http://www.xxsxx.net/water/default.asp
http://ipac.cersp.com/Article/KCXW/200511/321.html
http://218.4.84.35/bjwy/c200403/index24.htm
http://www.fuji-bj.com/Article_Show.asp?ArticleID=347
http://www.beijing2008.com/90/58/article211995890.shtml
http://www.yijiao.rdedu.net/dissertation/rudong/xx/syxx/shuizhiyuan/main-1/main.htm
http://www.ntem.com.cn/kjjx4/0608_rd_1.htm
http://www.bghc.net/xswz/index4.htm
http://ez.sm.fj.cninfo.net/hsweb/hs01g.htm
http://ipac.cersp.com/Article/KCXW/200511/321.html
http://wysy.zhedu.net.cn/wysy/xswww/xs2004n11/7.htm
http://www.baidu.com/s?wd=%B1%A3%BB%A4%CB%AE%D7%CA%D4%B4&lm=0&si=&rn=10&ie=gb2312&ct=0&cl=3&f=1&rsp=0
抹地的水用来冲厕所