System key combinations
- CTRL+ESC: Open Start menu
- ALT+TAB: Switch between open programs
- ALT+F4: Quit program
- SHIFT+DELETE: Delete item permanently
- Windows Logo+L: Lock the computer (without using CTRL+ALT+DELETE)
Program key combinations
- CTRL+C: Copy
- CTRL+X: Cut
- CTRL+V: Paste
- CTRL+Z: Undo
- CTRL+B: Bold
- CTRL+U: Underline
- CTRL+I: Italic
Windows之shortcut
原文：http://www.cnblogs.com/mengdie/p/4483464.html
