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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.就算抓不住奸细，也要救出公主和侍卫长。以汉国今日的国力，如何敢继续对实力强大的齐国吆五喝六？赶紧离开荥阳这个鬼地方，范文轲一刻也不想停留，不想继续留在这里等死。小喜姑姑笑嘻嘻地对他道。同名小说《杀戮一代》（2004）是一本由滚石杂志的记者Evan Wright根据亲身经历编写的自传，讲述了他身为深入战区的记者，跟随美国海军陆战队第一远征军参与了2003年伊拉克战争的经历。他对海军陆战队生活的阐述最早是在2003年秋天，由滚石杂志分三期连载出版。系列的开篇《杀手精英》，在2004年荣获全国杂志奖的最佳报道奖。