国产农村一级毛卡片无码

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.This individual refers to the fourth level, and I will talk about it later.代号“2101”的我国新型战机项目正在紧张的研制和试飞中，国外情报机构频频派出间谍人员试图接近项目获取情报，我国家安全局侦查处处长雷岳率侦查员们严密监视并防范各种间谍活动对“2101”项目的侵扰和窥视。代号为“蓝鸟”的两名间谍利用与项目总工程师王西平的叔侄关系不断试图接近项目研制人员并窃取技术情报，被雷岳屡次挫败。然而，代号为“火狐”的高级间谍已潜入项目周围伺机而动。然这一切都不是我想要的。Obviously, EventHandler is the delegate. Now use EventHandler to execute multiple methods.Introduction: Eyes have become love, which is a good expression of love.