string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2024%E5%B9%B4%E4%BA%8C%E5%BB%BA%E8%80%83%E8%AF%95%E9%9A%BE%E5%BA%A6%E6%80%8E%E4%B9%88%E6%A0%B7%E5%95%8A => Failed to connect to 101.89.143.195 port 38175: Connection refused"
2024年二建考试难度怎么样啊
