string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E5%BB%BA%E7%AD%91%E5%AE%9E%E5%8A%A1%E5%90%AC%E5%93%AA%E4%B8%AA%E8%80%81%E5%B8%88%E7%9A%84 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
一建建筑实务听哪个老师的
