string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E5%91%98%E8%80%83%E8%AF%95%E9%87%8D%E7%82%B9 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
监理员考试重点
