说明：  自己的小作,用于前后台系统,时间任务的管理,可以将运行周期和运行目标程序动态建立,销毁,还可以指定程序的运行次数,如运行3次后自动销毁,类似操作系统的管理模式.
(for their small for around Taiwan, time task management, it will run cycle and operational objectives established dynamic process, the destruction, but also the operating procedures specified number if the running after three rounds of automatic destruction, a similar operating system management model.)