key文件怎么看，key文件怎么打开？
.key
文件类型1：Keyboard Definition File
文件说明：
Defines keyboard shortcuts or keyboard layouts for different languages; maps keys to different characters for different languages; stores custom keyboard shortcuts for some programs.打开.key文件
Mac OS
Operating System (for keyboard layouts)Programs that support custom keyboard shortcuts
Windows
Operating System (for keyboard layouts)Programs that support custom keyboard shortcuts
Linux
其它内容
.key
文件类型2：Keynote Presentation
文件说明：
Presentation created with Apples Keynote presentation software; stored in the Mac OS X package format and includes slides, images, text, transitions, and XML data used by the presentation.打开.key文件
Mac OS
Apple KeynoteWindows
Linux
.key
文件类型3：Security Key
文件说明：
Contains registration information or a security code for a software program; often created when the program is registered; typically stored in the programs application folder or the system preferences folder.打开.key文件
Mac OS
Various programs that save registration informationWindows
Various programs that save registration informationLinux
来源：.key文件