string(293) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E5%B8%82%E6%94%BF%E5%BF%85%E8%80%83%E7%9F%A5%E8%AF%86%E7%82%B9%E6%80%BB%E7%BB%93 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
二级建造师市政必考知识点总结
