string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B8%82%E6%94%BF%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E5%AE%9E%E5%8A%A1%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
2021市政二级建造师实务答案
