string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%B8%80%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E5%B8%82%E6%94%BF%E5%B7%A5%E7%A8%8B%E6%8A%BC%E9%A2%98 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
2021一级建造师市政工程押题
