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　　參加晒所有興趣班，咁先可以加強競爭，唔會落段於人？根据作家木子喵喵同名小说改编的剧集《竹马钢琴师》，天娱新晋小花金雯昕出演女主角杨初末。If all are set to open-drain mode: otherwise for C language programs属下发现此事，也是踌躇好久，不敢声张。The mobile phone can also use the visitor function to install two WeChat apps. Through the third-party software for app doppelganger, other applications in the mobile phone can be doppelganger and two app programs can be installed at the same time. The application of two places at once can help us to use two or more accounts at the same time without carrying many devices.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.