随机出题系统，可实现从动态题库中随机提取题目显示，并可显示答案的答题系统。系统主要包括菜单界面、题库读入、随机多次出题、答案显示、题库分类、分类随机多次出题、答案显示、题库更新等部分。-Random questions system, enabling dynamic exam randomly extracted from the subject shows that the system can display the answer answer. The system includes m