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步平凡是六一班的小学生，聪明、顽皮、讲义气，知识渊博，喜欢搞恶作剧。一天，由于一个很偶然的意外，步平凡陷入昏迷之中。步平凡的爸爸、妈妈万分着急，想了各种办法为步平凡治病，都没有效果。步平凡的同学在万般无奈的情况下，向快乐星球发出了求救信号。　摆脱了黑暗星球的骚扰，快乐星球的生活又恢复了平静。棒棒是快乐星球的小发明家，他对中国灿烂的古代文明非常有兴趣，暗地里一直在研究前往大唐王朝的时空穿梭机。老顽童爷爷收到步平凡爸爸的求救信号，决定派棒棒和防火墙去帮助步平凡。 　　Q星球的Q博士是一个野心很大、自视甚高的科学天才，他的梦想就是利用科学征服整个宇宙。但是， 　　Q博士也明白，仅凭他个人的力量，根本不可能实现自己的梦想。于是，他想到了利用地球上磁场口问题，试图用消磁的办法来毁灭人类。故事围绕着三方任务的行为展开。2.1. 3 Design requirements for the direction of travel of the PCB2015全新动感的华纳大动画电影——汤姆和杰瑞之间谍任务。任何年龄的汤姆和杰瑞迷都不会想错过和汤姆和杰瑞一起去冒险，一起去拯救世界，一起踏上危险的间谍任务。Identify the problem2. When pilotage ships do not perform pilotage tasks, they shall display the lights or types specified for similar ships of the same length. However, all possible measures as permitted by Article 36 shall be taken to indicate the nature of the relationship between the towing vessel and the towed vessel.The fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.$(document). Ready () {