string(319) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B0%B4%E5%88%A9%E6%8A%80%E6%9C%AF%E8%B4%9F%E8%B4%A3%E4%BA%BA%E7%9A%84%E4%B8%BB%E8%A6%81%E8%81%8C%E8%B4%A3%E6%9C%89%E5%93%AA%E4%BA%9B%E5%86%85%E5%AE%B9 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
水利技术负责人的主要职责有哪些内容
