string(307) "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%9C%BA%E7%94%B5%E5%B7%A5%E7%A8%8B%E7%AE%A1%E7%90%86%E4%B8%8E%E5%AE%9E%E5%8A%A1%E8%80%83%E8%AF%95%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
2021二建机电工程管理与实务考试答案
