string(265) "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%E6%B3%A8%E5%AE%89%E5%B8%88%E6%88%90%E7%BB%A9%E5%90%88%E6%A0%BC%E6%A0%87%E5%87%86 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
中级注安师成绩合格标准
