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3.3. 1 Create Test TableThe outer surface is plated with copper, and the raw material of the core wire is mainly aluminum. The outer surface is scraped and the aluminum core is silvery white. The quotation per unit of aluminum is about 1/4 of that of copper, and the same volume of aluminum is only 1/3 of that of copper, so the quotation per unit of copper clad aluminum is much cheaper than that of oxygen-free copper. Copper-clad aluminum has poor oxidation resistance, faster oxidation speed in humid environment, and poor tortuosity resistance of aluminum raw materials. It is not suitable for laying in the wall, and is only suitable for customers who do not have high demand for network stability or may temporarily establish a network.The above is the whole content of this article, I hope the content of this article can bring some help to everyone's study or work, and I also hope everyone can support the code farming network more.什么东西在吵……陈启迷迷糊糊的嚷了一句，然后又开始睡觉。14岁的池内亚也（泽尻惠理香 饰）生活在一个平凡的6口之家，成绩优异的她是家中弟妹的榜样。升上高中后她的身体似乎出现了些毛病，她开始失去平衡力甚至常常摔倒在地。妈妈带她到医院检查，才发现她患上了一个名叫脊髓小脑变性症的不治之症。她的生活就此发现了惊天动地的变化。她必须退出学校的篮球队，因为她的手脚开始不能协调活动，写字也会出现障碍，最后连也失去言语的能力。她放弃了很多东西，放弃了自己的爱情，放弃了自己的兴趣，却换来了部分人的歧视与不解，她不明白为何病魔一样要选择她，可是她在家人的理解与鼓励，知己麻生遥斗（锦户亮 饰）的支持下，对生活仍然充满了希望。啊，粉红十九名了。