string(321) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E7%BB%A7%E7%BB%AD%E6%95%99%E8%82%B2%E7%BB%BF%E8%89%B2%E5%BB%BA%E7%AD%91%E4%B8%8E%E7%BB%BF%E8%89%B2%E6%96%BD%E5%B7%A5%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
二建继续教育绿色建筑与绿色施工答案
