string(242) "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%E6%B3%95%E8%A7%84%E9%99%88%E5%8D%B0%E7%B2%BE%E8%AE%B2 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
2021二建法规陈印精讲
