先取一个随机数，再检测一个进程，若该进程正在运行，则按随机数分钟来禁用网卡。可用于家长控制电脑。该代码可更改成，其他功能，如关闭进程。-First take a random number, and then detect a process if the process is running, press random a few minutes to disable the network card. Can be used for parental control computer. The code can be changed to other functions, such as shutting down the process.