string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E7%9A%84%E4%BA%8C%E5%BB%BA%E6%B3%95%E8%A7%84%E8%80%83%E8%AF%95%E9%9A%BE%E5%90%97 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
2021年的二建法规考试难吗
