string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%B8%80%E5%BB%BA%E6%B0%B4%E5%88%A9%E6%B0%B4%E7%94%B5%E5%B7%A5%E7%A8%8B%E7%9C%9F%E9%A2%98%E8%A7%A3%E6%9E%90 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
2020一建水利水电工程真题解析
