string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E7%BA%A7%E8%81%8C%E7%A7%B0%E7%AD%94%E6%A1%88%E6%80%8E%E4%B9%88%E5%B8%A6%E8%BF%9B%E8%80%83%E8%AF%95 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
中级职称答案怎么带进考试
