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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.春田创一喜欢女人，结婚的愿望也很强烈，却完全没有女人缘。然而，他却接到两个处于他的恋爱对象圈以外的男人的告白，这让他内心发生了激烈的动摇。爱慕他的男子之一是上司黑泽武藏，另一个是他的后辈同事牧凌太。剧情讲述一个柬埔寨高官之女在婴儿时期曾被一丝虎魂附体，当她抑制不住自身的怒气的时候，虎魂会占据她的身体。在她因内战逃亡时，来自坏人的伤害使得她异常愤怒，她变成了一只老虎。男主护送女主回国并帮助她解除变成老虎的诅咒，在两人相处过程中，两人日久生情，但是女主能摆脱变成老虎的命运吗？影片以清朝为背景，故事讲述宋世杰（周星驰饰）是著名讼棍，他胆敢批评当时的衙门大官，运用其绝顶聪明的才智为人告状申冤，虽不满官场腐败黑暗，但自己也曾收受贿赂，赚了很多昧心钱，以至生了十多个儿子都养不大，其妻（梅艳芳饰）为了不至绝后逼其关门封笔，不可再上衙门办案，宋世杰考虑再三后决定接受妻子的建议，但其后他又遇上了一个身负千古奇冤的寡妇（吴家丽饰），于是又被迫重出江湖，发挥自身本领令她沉冤得雪。草王坝村是贵州遵义县大山深处的一个常年缺水的小村落，为了改变家乡贫困缺水的面貌，村支书黄大发自六十年代起带领全村人绝壁凿天渠，中间经历的种种失败、种种磨难没有将他击垮，反而一次次激发出他艰苦奋斗、战天斗地的豪情。。。故事舞台设定在有严格等级制度，学生分为学生会长，学生会成员和亲卫队选民，以及平民三个等级的岚之丘学园，神秘转校生清水小百合却破坏了规矩，她不服从学生会，我行我素，与学生会发生冲突。可你要是怀疑我这小弟弟，我可不依。