问题 填空题

一个关系模式为Y(X1,X2,X3,X4),假定该关系存在如下函数依赖:X1←→X2,X1→X3,X1→X4,则该关系属于 【18】

答案

参考答案:BCNF

材料分析题

2005年4、5月间,中国国民党 * * 连战、亲民党 * * 宋楚瑜先后访问大陆。中 * * * * 胡 * * 分别与连战、宋楚瑜举行会谈,并发表会谈公报。公报中都强调反对“台独”。请运用《思想政治》中学过的知识简要回答:

(1) 反对“台湾独立”的最主要依据是什么? 

                                                                                                                                                               

                                                                                                                                                               

(2) 中 * * 党和中国政府主张解决台湾问题的基本方针是什么?你是怎么理解这一方针的?  

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

(3)我国实行这一基本方针有什么的重要意义?

                                                                                                                                                                 

                                                                                                                                                                

                                                                                                                                                                

选择题