string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%9D%E7%BA%A7%E6%B3%A8%E5%AE%89%E6%9C%89%E5%BF%85%E8%A6%81%E8%80%83%E5%90%97 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
初级注安有必要考吗
