[问答题] 专制主义中央集权是中国古代政治制度的核心，它的确立、完善和不断加强，反映了封建专制制度发展的基本轨迹。结合有关史实回答：
（1）专制主义中央集权的核心是什么？其发展过程中的两对矛盾是什么？ ___________________________________________________________________________________________（2）以唐朝和明朝为例，说明统治者是如何解决皇权矛盾的？ _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________（3）专制主义中央集权的不断加强在我国历史上有何积极影响？又有何消极影响？_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________