string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E4%BA%8C%E5%BB%BA%E5%AE%9E%E5%8A%A1%E6%8A%BC%E9%A2%98 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
21年二建实务押题
