【摘要】 阐述了“电路分析基础”题库系统中等概率选题数学模型的建立方法、图形信息的数字化处理及存贮方法、沿任意角α画出电路元件的算法．题库系统可同时进行汉字信息处理、图形信息处理及数值计算，达到了按实际试卷格式出题、组卷迅速、多界面人机对话的目的，既可全自动选题，又可人为选题。更多还原

【Abstract】 The article indroduces how to establish a methematical model to choose a test item in the same probability and how to make the diagram information digitiz-ing and storing. It also gives an algorithms that makes it possible to draw an electrical circuit diagram in any form. The system can treat Chinese character information and diagram infomation.At the same time,it can also make a great deal of calculations. The system can rapidly formalize useful test paper multi-interface-man- machine interaction automatically or manually.更多还原