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Reporters saw in the Clean Incineration Center of Chaoyang Circular Economy Industrial Park in Beijing that garbage trucks had been delivering domestic garbage all morning. Two hills had been piled up in the 35,000 cubic meters of garbage pool. Above the garbage pool, express packages such as plastic bags and woven bags mixed in the garbage pool could be clearly seen. However, these mixed plastic express packages not only increase the amount of garbage disposal, but also increase the cost of garbage disposal.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.For medicinal tea and tincture4. Please pay attention to the sequence of question numbers when answering questions. The answer can only be written within the scope of the question area of the answer card. Otherwise, the answer is invalid. Any answer written on the test paper or draft paper is invalid.在大萧条期间，一位忠诚的高中足球教练带领一支瘦骨嶙峋的孤儿队参加了州冠军赛，他被自己神秘的过去所困扰，一路上激励着一个破碎的国家。紫茄也捂着鼻子道：板栗哥哥后背真硬。