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Dependence Inversion Principle (DIP) means that abstraction should not depend on details, and details should depend on abstraction, which is the proposed "interface-oriented programming, not implementation-oriented programming". This can reduce the coupling between customers and specific implementations.Five, in the "action" tab of the "block writing palette" click "flip action", AutoCAD? The command window at the bottom prompts "Select Parameter" and clicks the text "Flip State" on the figure (that is, the horizontal mirror axis); The command window then prompts "Select Object" and clicks on all lines and attributes on the graph except the short horizontal line under the triangle (the attribute displays the word "elevation" at this time) and enters. The command window also prompts "Specify Action Position" and drags the mouse to the nearby blank space to click.不知怎样跟孙女解释这其中的关窍。本片讲述一位听障女孩爱丽丝在圣母玛利亚的一次探视之后莫名其妙地恢复了视听功能，甚至还能给人治病。这一消息立刻传开，人们纷涌而至，感受奇迹，一位失了名声的记者（Jeffrey扮演）想要一探究竟并借此找回名声。随着可怕的事情一件件发生，他开始质疑这些现象是圣母玛利亚的“杰作”，还是更邪恶的存在？绝对不会能做他的棋子，刘邦在心中猛烈地摇头。从陆天恩一生的际遇中，我们看到的是一幅中国近百年来历史变迁的绘卷。Hearing this, I think of the famous carnivorous fish-sawtooth salmon, which lives in tropical waters and fears almost all creatures living with them, including crocodiles, which are known as freshwater overlords, and a more familiar name, namely "piranha". However, the serrated salmon has made such a "world-famous" reputation for its small size. In addition to the large number, In addition to his fierce temperament, It is also closely related to their unique tooth structure, The teeth of salmon, Is sharp on both sides, The middle is sharp and densely arranged, and has a strong cutting function for all kinds of skin and meat. Therefore, although its mouth is not large, it can basically tear off a large piece of meat with one bite. Similar examples include the teeth of great white sharks, which also have such functions. However, the individual size of great white sharks is too large to be compared with serrated salmon, and its lethality cannot be compared.