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Investment is like a cycle of farming on the most familiar land, while travel is looking for different scenery and experiencing different lives everywhere. What a wonderful life it would be to use the money earned from investment under the principle of constant conservatism to continuously realize novel journeys? But how sad would it be to do the opposite: always use all kinds of novel tricks to try your luck in the stock market to find pleasure, but eventually you didn't make any money and were tied to the computer?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.毕竟若要真的施行起来。1. Written examination: (Different companies have different written examination topics).黑道家族二少爷Kinn被敌人暗算，在出逃期间与Porshe相遇，Porshe是一名大学生，在一个娱乐场所做兼职，刚好看到Kinn被人追杀，但并没打算上前解救。吴老二进城务工，投奔在城里卖手抓饼的大哥，不料爱上了性感嫂子阿莲。青年土豪庆庆是阿莲的初恋男友，偶然相遇，激情火花四射，一段五迷三道、遍地奇葩，大打出手的故事就此拉开了帷幕……他亲自将妹妹送进后院，才回屋歇下。