string(251) "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%882023%E7%AD%94%E6%A1%88%E7%AE%A1%E7%90%86 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
二级建造师2023答案管理
