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The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.几句粗鄙文句，刘夫人谬赞了。I. Front Suspension Analysis郭勤勤是个令人头疼的人物：不够圆融、不够亲切，不怕得罪人，但偏偏，她认真负责、能力很强，所以公司上下众多讨厌她的人帮她取了一个外号「面瘫姐」！于是，秦淼便睡凳子了，有时又在地上打地铺。一群身在异乡的海外华人用生命捍卫着“华人团结”这几个字。当他们面对亲人被绑架时勇敢挺身为尊严而战。他们不曾忘记自己是炎黄子孙，勇斗武装悍匪并成功解救被绑架人质。本片表达了在“外”漂泊的游子想回到我们日益强大的祖国母亲怀抱的迫切心情，唤起生活在和平社会的我们要珍惜当下，热爱祖国。Over The Storm -- M!LK