string(243) "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%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
2021二建法规考试答案
