说明：  熟悉操作系统的命令接口、图形接口和程序接口.使用Windows常用命令:dir 、md、copy、date、help，显示这些命令的结果，并解释这些命令的作用；
(Familiar with the operating system command interface, graphical interface and programming interface. The use of Windows used the command: dir, md, copy, date, help, show the results of these commands, and to explain the role of these commands )