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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.两个孩子在野外目睹一起可怕的谋杀案后，一次充满乐趣的周末露营之旅变成了一场为生存而战的绝望斗争。他们不仅要忍受恶劣的环境和凶猛的野生动物，而且还必须在杀手找到他们之前，逃离到安全的地方。该剧改编自梵缺的超高人气小说《爆笑宠妃：爷我等你休妻》，讲述了坚韧不屈的尚书千金曲檀儿（梁洁饰），意外邂逅东岳国万人瞩目的八王爷墨连城（邢昭林饰），二人历经波折，由猜忌、试探再到信任、相爱，终成欢喜冤家的爱情故事。警队实习生刘颖（孟霞 饰）在保护港商的任务中被一大叔顺手牵羊拿走了手机和高档包，得手的大叔将赃物作为礼物送给了侄子小强（赵英俊 饰），刘颖打电话要求赎回手机，小强见有利可图，遂带着行骗家族的优秀基因踏入了城市。小强进城投奔困窘中的同乡好友四毛、小翠，三人使出诸多谋生手段，从兜售假成人片光盘到扮乞丐要钱无所不包，小强更利用油嘴滑舌从警察刘颖还有黑社会大姐大李太太（金巧巧 饰）手中一次次逃脱。在又一次被刘颖捉获之时，小强突发神勇，凭三寸不烂之舌救下了遭黑社会坑钱的工厂主吴大成（那威 饰），并答应帮其讨回欠款，于是小强开始了与黑社会斗智斗勇……In the above-mentioned situations (1), (2) and (3), if the defendant can actively compensate and obtain the understanding of the victim, and meets the conditions for the application of probation, probation may be applied.Telecommunications