string(231) "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%E7%AE%A1%E7%90%86%E5%87%A0%E9%81%93%E9%A2%98 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
一建管理几道题
