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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.各自去了结因果。因为范家这样的存在，巨大的实力是每一个诸侯都想要得到的臂助。盛浩然失去了所有的记忆，被迫沦为了时间小偷，依靠偷窃别人的时间存活，却做梦也没想到卷入了少女莫小竹父亲医院的病人离奇死亡的事件，两人一同解决事件的同时产生了爱情，但最后盛浩然却发现找回自己记忆和身份的关键竟然就在莫小竹的身上，自己更是面临着责任与爱情的重大抉择……郑氏点点头，道：晓得了。演绎两个高中男教师的爱情故事。 数学老师冰川彻（寺西优真 饰）从东京大学毕业之后，成为高中三年级的班主任，他的助教是体育老师赤城真澄（山本裕典 饰），虽然两人性格截然相反，但赤城却被冰川渐渐吸引。然而，冰川已经跟一名女子订下婚约…… 这部剧将于今年夏天在东京都会电视台、亚马逊Prime Video等平台上播出。"Of course, it is impossible for fur to resist bullets. As long as you hit it accurately, you can kill one with a maximum of two shots. The speed is not slow, but it is not impossible to hit. If they only run on flat ground, then there is really no threat, but-they will drill the ground!"