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R1 +//Button-Triggers Attack八十年代末，北方小镇金水河，通过勤劳致富的个体户们手里有了闲钱。聪明但是经常好做梦的刘奇思给大伙出了个“钱生钱”的好主意，那就是造飞机卖专利。在刘奇思好哥们五里香烤鸡店老板金守财的大力倡导下，大伙纷纷入股这个“高科技”项目，都梦想着飞机造成后能够一本万利……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.该剧主要讲了警察Bishop和Pike两人搭档在伦敦东区追击罪犯的故事。从表面上来看Bishop和Pike有许多共同之处，他们不仅很酷，而且聪明又强硬；此外他们两人关系很好，总是能够支持和帮助对方。然而，他们的家庭背景不同，加入警察队伍的动机也不同，工作之外的情感生活因此也不同。Bishop在养老院和街头长大，从不认识他的父亲。Pike来自理想的家庭，他跟随警察父亲的脚步加入警局，同时渴望做出自己的成绩。尽管存在着这些差异，但Bishop和Pike都保持着相同的道德准则。即使他们之间的化学反应看起来随时会爆炸，但他们的工作仍然非常出色。越军兵临门口，汉王刘邦就深深感受到了威胁。However, offline organizations also have many limitations in the process of large-scale development. First, their enrollment and teaching staff construction are limited by regions. Second, it is facing the problem of expansion in different places brought about by the choice of stores and different policies for running schools in different places. Third, the investment required for the construction and management of its stores is relatively heavy. Fourth, there is a shortage of outstanding management talents and it is difficult to duplicate store management talents.