中國青年

犬金组长给了他们两个选择，一是以死谢罪，二是被送往泰国接受变性手术，然后以偶像组合的身份出道。最终，三人选择了后者，就这样，以爱理、真理和千佳为核心成员的偶像组合后街女孩诞生了。周菡对他印象不错，闻言忙谢过他，又道：姐姐姓周，单名一个菡字。该剧讲述一群比坏家伙们更坏的人，然而就是这样一群人，却用专属于他们自己的手段为社会除暴安良。2014年，突然出现的外星人，要求人类进行“交易”。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., there is only one activity instance in the stack, and the activity instance is already stored in the stack. In other activity, start this activity, Android directly kicks other activity instances above this instance out of the stack GC;