string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%8B%E5%88%97%E9%A1%B9%E7%9B%AE%E5%B1%9E%E4%BA%8E%E5%8F%82%E5%8A%A0%E7%BD%91%E4%B8%8A%E6%B4%BB%E5%8A%A8%E7%9A%84%E6%98%AF => Failed to connect to 14.18.117.71 port 38069: Connection refused"
下列项目属于参加网上活动的是
