PDF-to-Word:http://www.pdftoword.com/
PDF-to-Excel:http://www.pdftoexcelonline.com/
Word-to-PDF:http://www.wordtopdf.com/
以上都是Nitro PDF旗下在线转换网站。
参考：http://www.web20share.com/2009/02/pdftoword.html Pdftoword：最精准的pdf to word文件转换器
PDF-to-Word:
http://www.pdfonline.com/pdf-to-word-converter/
http://www.youconvertit.com/ConvertFiles.aspx
PDF to Word Converters:Convert PDF to Word,PDF to Word,PDF to Doc,PDF a Word
PDF to Excel Converters:PDF to XLS,PDF to Excel,Convert PDF to Excel,PDF to Excel Converter,PDF to XLS Converter
PDF to PowerPoint:Convert PDF to PowerPoint,PDF to PowerPoint Converter,PDF to PPT
PDF to CAD:Convert PDF to AutoCad,PDF to DXF
PDF to HTML:PDF to HTML
PDF Creation:PDF Converter,PDF Conversion
Word to PDF:Word 2 PDF
Excel to PDF:Convert XLS to PDF,XLS to PDF
Powerpoint to PDF:Powerpoint to PDF
Publisher to PDF:Publisher to PDF
参考：
1、http://xbeta.info/pdf2word.htm PDF转换word格式的方法总结
2、http://www.cometdocs.com/ 主页底下有各种转换工具的链接
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