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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.二十年代，西医大夫林敏夫从某西医院的手术室冲出，他的岳父一当地富豪，因敏夫不慎失手，命丧 手术台。敏夫面对家庭前途将毁于一旦，情急下央求长年受他接济资助的同学及同事—吕阳明帮他顶罪受过，并发誓好生的照顾阳明的妻儿，阳明为报恩，一时意 气，勉强答应。“九•一八”事变爆发，家破人亡的武林志士华志强与恋人张小叶逃离故土。两人途中失散。小叶避难于以当了汉奸的姨夫魏辛家。志强则被中华武馆的杨馆长收留。外交官间谍坂田为征服中华武术界，安排自己的儿子小次郎杨馆长比武。后设计毒死杨馆长。华志强为师傅报仇，打败小次郎。坂田唆使忍者砸武馆，志强逃出，在黄河边苦练绝技。不久，苦练忍术后的小次郎约志强在长城一决雌雄。志强最终获胜，而坂田突然下毒手，志强倒在枪口下。八十年代末期，滨海市建筑学家刘浩明由于意外事故不幸身亡，一岁多的女儿婷婷失踪，其好友鹏达集团经理夏鹏飞与刘妻林蕙兰组建新家庭。婷婷流落偏远山区，被叶大山收养，取名明珠。二十二年后，明珠自学成才。她应聘到鹏达集团工作，与留洋回国的儿时伙伴李超再次相遇，李超多次对明珠表达爱意，均被拒绝。夏鹏飞的司机江志彬为了出人头地，威逼儿子江磊迎娶夏的女儿夏梦洁。建筑监察刘浩宇揭开了鹏达集团挪用资金的内幕，夏鹏飞面临破产。明珠的身世之谜逐渐被揭开，她和李超一起为共同的梦想而努力，成为建筑业的精英。李超的执着最终感动了明珠，两人携手走到了一起，迈向新的未来　　童氏族长童镇即将病殁，次子童战，幺儿童心，为救父亲，私自离开水月洞天，潜入御剑山庄盗取传闻中可以起死回生的“血如意”。长子童博（实为龙博，龙腾之后）闻讯赶至，救回正遭围攻的童战，却误把女扮男装的小贼豆豆当成童心一起带回。童战见到族长父亲最后一面，童镇留下遗言：由童战接任族长之位，让童博离开水月洞天。