string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E7%9B%91%E7%90%86%E6%A6%82%E8%AE%BA%E6%95%99%E6%9D%90%E5%88%86%E6%9E%90%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
2021年监理概论教材分析答案
