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In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.影片改编自法国当代著名作家约瑟夫·若福的自传小说《弹子袋》。在被德军占领的法国，莫里斯和乔是一对年轻的犹太兄弟，父亲经营着一家理发店，一家人生活温馨又美满。直到纳粹要求所有犹太人必须在外衣上缝上一个黄色的六角星以示区别，由于当时人们对犹太人的偏见，同学对他们的态度也开始转变。眼见犹太人的处境越发困窘，父亲命令两兄弟立刻先行前往自由区逃难，一家人约定在尼斯汇合。临走前父亲嘱咐不能告诉任何人他们的犹太人身份。在离开的火车上他们才真正亲眼看到了纳粹对于犹太人民的迫害。漫长的逃亡之路，纳粹仿佛无处不在，而他们惊人的机智与勇气以及陌生人的出手相助让他们躲过了一次又一次死亡的威胁，两兄弟相依为命只为与家人再次团聚。超级巨星Julian César Solar是一位音乐偶像，这是一个不惜一切代价点燃了背叛、竞争、爱情和追求名利的故事……也不知什么缘故，板栗跟葫芦觉得这一年来，他们无论读书习武都进益非常快，这也是为什么他们不想急着回去的原因之一。11. Return to a previous step if necessary.该剧记叙的是左权在抗日战争中的光辉事迹。红一军团似排山倒海之势攻打西部马家军。左权命令天黑之前拿下曲子镇，红军官兵活捉冶成章。左权入情入理唤醒冶成章的民族责任心，冶成章立誓不再与红军为敌。红一军团似排山倒海之势攻打西部马家军。左权命令天黑之前拿下曲子镇，红军官兵活捉冶成章。左权入情入理唤醒冶成章的民族责任心，冶成章立誓不再与红军为敌。红军进驻海原与东北军骑兵六师签订停战协议，两军将士拉歌联欢。左权因“托派”问题久未结论，自己只是代理军团长，希望停战协议由政委聂荣臻签字主笔，聂荣臻劝老战友放下包袱大胆履行军事主官的天职。蒋介石命令东北军骑兵六师穿过红一军团驻地解救马家军，左权打个假仗帮林起解难。左权授权指挥西方野战军发起山城堡战役国民党军78师师长丁德隆。国民党国防部高……