string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%BA%8C%E5%BB%BA%E7%AE%A1%E7%90%86%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
2020二建管理考试答案
