string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%A4%A9%E6%B4%A5%E4%BA%8C%E5%BB%BA%E5%AE%9E%E5%8A%A1%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
2020天津二建实务答案
