生成随机函数，可已经随机函数抽样用，是随机函数抽抽样的重要一部分。-Pumping sampling an important part of the random function to generate a random function, the function may have been random sampling with.

随机抽题的考试系统，有单选、判断、多选等-Testing System

实现随机抽取姓名的功能，可用于抽奖，随机选举。软件还有不允许抽到哪些人，当然也可以设置只允许哪些人被抽取。-Achieve random function names can be used for sweepstakes, random elections. Who have not able to get the software, of course, can also be set to allow only what people have been taken.