ExamSystem，简单的学生在线考试系统，实现了考生登录，在线答题，提交答案，直接查看成绩等功能。是在达内学习的一个简单项目，可供学者参考。-ExamSystem students online examination system, candidates log on-line answer, submit your answers directly view the results and other functions. Study reached within a simple pr