随时随地都可以做的世界游戏

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.至于去了哪里，不用尹旭说明，桓楚和苏岸都能猜个大概，一定是秦军军营后面葫芦谷低矮的山丘。The weapon magnification of different weapons is very different, so the same "Attack LV5" skill has different influence on the panel.B women: foil individual, foil group, epee individual, epee group.恩师不仅为师，更是友，是为良师益友，志同道合。若是秦皇血统的王子继位，天下人能接受吗？当然了这些都是其次。一家偏远的阿根廷度假村恢复了曾经的宽板滑水竞赛。这吸引了墨西哥运动员斯黛菲，她决心揭开一个家族秘密。