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徐风撇着嘴埋怨：我说写‘囍你又不让。Now let's create a Baidu subclass to inherit the above parent class. The code is as follows:In addition, they apply different stages of design, and the appearance mode is used in the early stage of design, because the system needs to rely on appearance in the early stage, while the adapter is applied after the design is completed. When it is found that the designed classes cannot work together, the adapter mode can be adopted. However, in many cases, the use of adapter mode should be considered at the early stage of design, such as involving a large number of third-party application interfaces. Proxy mode is that after the mode is completed, it wants to be provided to other clients in the form of services for calling. At this time, other clients can use proxy mode to access the module.Components and wiring should be evenly distributed on the PCB as far as possible to avoid being too concentrated in a certain part of the PCB, especially DIP devices, which is not allowed.浙东水乡，景色如画。老年的赵定玉，重回故地。芳草凄凄的孤坟旁，破碎的镜片中，恍惚浮现美云凄美的面庞。往事如烟，难以排遣的自责让赵定玉思绪难平……想到这个，刘氏心里就发抖起来。更多地还是想要保住自己的性命。