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　　“爱尔纳．突击”国际侦察兵竞赛是爱沙尼亚共和国组织的一项国际性军事竞赛活动，是侦察兵在“敌占区”实施的远距离、多课题侦察作战演习。竞赛在生疏地形上进行，在与假设敌的激烈对抗下实施，要求参赛队员在负重35至40公斤装备物资的情况下、连续行走四昼三夜行程180公里以上，在6至8个控制站完成近二十多项竞赛内容。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.At first hearing Ding Rui talk about the word "death experience", He Yihe thought it was another project of "rich people's middle-aged crisis burning money" and scoffed at it. However, the ideas of Huang Weiping and Ding Rui finally persuaded him to stay and become the designer of the experience process.往后，我也能天天来瞧你。The second is to learn the whole design mode. I think many modes are very similar and I can't tell the difference between them.The Interface Segmentation Principle (ISP) means that it is better to use multiple specialized interfaces than to use a single total interface. That is to say, don't let a single interface take on too many responsibilities, but should separate each responsibility into multiple specialized interfaces for interface separation. Too bloated an interface is a kind of pollution to the interface.CBS的《生活大爆炸 The Big Bang Theory》衍生剧《小谢尔顿 Young Sheldon》获续订第二季，该剧收视上在无线网喜剧上领先（最新集在喜剧范围，收视仅比母剧低），续订只属必然之事。成为CBS这个季度新剧里第一部被续订的新剧。经过调整档期、单打独斗的考验后，该剧在收视上有着不俗的表现，让CBS鲜有的给予了超前续订的待遇。