document.writeln("<Center><div class=\"doc\"><a href=\'/e/member/fava/add/?classid=43&id=50811\'  target=\'_self\'><i class=\"fa fa-file-word-o\"></i> 机械设计制造及其自动化（本）专业毕业论文参考选题题目文档下载.doc </a></div></Center>");