string(253) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%BA%8C%E5%BB%BA%E7%AE%A1%E7%90%86%E7%9C%9F%E9%A2%98%E7%99%BE%E5%BA%A6%E4%BA%91 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
2021二建管理真题百度云
