学生考试系统，设置了不同的用户不同权限，包括对试卷考题、答案等信息的管理，可以进行添加、修改和删除。系统用ASP.Net(C#),数据库采用sql server-Student examination system, it has been set up into different users different permissions, including the paper exam questions, answers, and so the management of informat