他们要求在8号到13号之间,上传扫描的成绩单,作品集,和系补充表格,可是我上传后就显示: You tried to upload a file of MIME type: application/x-msdownload You may only upload PDF files with MIME types of application/pdf or application/x-pdf. Please try again after changing your file. Adobe Acrobat, Microsoft Word, and Open Office have been tested and shown to produce the correct MIME type for .pdf files when you print to PDF. Other methods of making .pdf files may or may not result in acceptable MIME types, but have not been tested 我上传的是从他们网页上下的表格,填了以后又保存到我的电脑里,点上传为什么会出现上面那些文字,我上传的的确是PDF格式的啊。?请解答,谢谢