string(307) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%BB%BA%E8%AE%BE%E5%B7%A5%E7%A8%8B%E6%B3%95%E8%A7%84%E5%8F%8A%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E9%87%8D%E7%82%B9%E5%BD%92%E7%BA%B3 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
2020建设工程法规及相关知识重点归纳
