string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%86%8C%E5%AE%89%E5%85%A8%E5%B7%A5%E7%A8%8B%E5%B8%88%E8%80%83%E8%BF%87%E5%90%8E%E8%BF%98%E9%9C%80%E8%A6%81%E5%AE%A1%E6%A0%B8%E5%90%97 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
注册安全工程师考过后还需要审核吗
