试题库的创建，试题录入和试题查询功能；此外，还具有密码保护机制的用户登录，用户管理和密码修改等功能，能够对管理员、教师、学生三种用户有一定的权限控制。-examination questions library of examination questions, test question input and query function in addition, but also has password protection mechanism for the user login, us