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We have to try to replicate the achievements of outstanding people. If you fail, stop to think about why you fail, so as to create an effective psychological representation. This is the core of deliberate practice.The evaporation box in the automobile air conditioner works in a low temperature environment, and water will be generated when encountering relatively hot air from the outside world, so water will flow out under the chassis of the automobile with the air conditioner on. At the same time, the humid environment of evaporation box and ventilation pipe and the dust deposited on the surface provide congenital conditions for mold breeding. Once mold encounters a suitable environment, it will multiply quickly. In the process of reproduction, it will produce rotten peculiar smell of objects. These peculiar smell will be mixed in the air conditioner with the opening of the air conditioner, thus polluting the interior of the whole carriage, often making drivers feel uncomfortable, and seriously causing discomfort such as dizzy rotation and chest tightness.The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu地垄上冻得冷硬的土疙瘩被晒化后，又晒干了，但地沟里却是湿土，苞谷用劲大了些，竟滚到沟里去了，后背都沾满了泥，帽子也掉了。他招李敬文来，并无要紧事交代，和颜悦色地勉励了他一番话，命他成亲后即刻携妻回任上。一家子老小见面自然高兴，却顾不上叙别情，立即说起真假玉米的事：大苞谷的伤已经无碍了，然一身疤痕是免不了了。