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The outer surface is plated with oxygen-free copper, and the raw materials of the core wire are brass, bronze and miscellaneous copper. Because the raw materials of copper inside and outside are different, it is called copper clad copper. The quotation is moderate, and the quotation for miscellaneous copper is usually only half or lower than that for oxygen-free copper. The produced wire is attributed to non-standard wire, and its anti-twisting and anti-oxidation functions are better than those of copper-clad aluminum. Suitable for induction and wiring engineering with low accounting, it can lay hidden lines in the wall. However, due to the influence of raw materials, the resistance is relatively large, with a 100-meter resistance of 25-35 ohms or even more, and the signal attenuation is very large. It is not so-called all-copper. We pay attention to the distinction.我不在乎有没有来生，也不在乎命运的补偿。One network cable corresponds to one IPErnie Hudson扮演洛杉矶国际机场空中交通管制负责人Brooks。他知道如何读取计算机屏幕上的信息并熟练地帮助繁忙的机场理顺各条航线，但他对计算机系统具体如何运作一窍不通。书儿乖巧地眨眨眼睛，从进大门说起，每个人干了什么，说了什么话，一一道来。