咱们刚在山上掰了半天笋子，也累了。晓晓，随便打听别人的私事可是不好的行为。The newspaper said: "The total number of cancer deaths in the United States showed a downward trend for the first time in 2005." "Cancer is a chronic disease that can be treated, controlled and even cured." In the past, it was believed that cancer would lead to death, and it would take less than three months. Now it is believed that cancer is a chronic disease that can be treated, and the treatment method will change with the change of understanding. The decline in the death rate of cancer patients in turn proves that this change of understanding is close to the right direction. Western medicine came from the West. At present, the number of cancer survivors in the United States is 1/29 of the total population, while that in Shanghai is only 1%, which is far from other places. This shows that Shanghai's understanding and treatment of cancer are still shrouded by the shadow of past mistakes. Many innocent lives still die under the wrong medical understanding and medical methods.[Recommended to Friends]The outer surface is plated with oxygen-free copper, and the raw materials of the core wire are brass, bronze and miscellaneous copper. Because the raw materials of copper inside and outside are different, it is called copper clad copper. The quotation is moderate, and the quotation for miscellaneous copper is usually only half or lower than that for oxygen-free copper. The produced wire is attributed to non-standard wire, and its anti-twisting and anti-oxidation functions are better than those of copper-clad aluminum. Suitable for induction and wiring engineering with low accounting, it can lay hidden lines in the wall. However, due to the influence of raw materials, the resistance is relatively large, with a 100-meter resistance of 25-35 ohms or even more, and the signal attenuation is very large. It is not so-called all-copper. We pay attention to the distinction.所以，这些专业人士觉得想要收益最大化，想要电影大赚，那么就应该缩减投入，投入的资金缩小一倍，投入个七八千万，就行了。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.
