string(292) "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%E4%BA%86%E6%80%8E%E4%B9%88%E9%A2%86%E8%AF%81 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
注册安全工程师考过了怎么领证
