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? 01 Industrial Internet in the United StatesIntercept a section of network cable and burn it under the network cable with a lighter. If the outer skin of the network cable has flame resistance, the outer skin of the network cable will gradually melt and deform, but it will not burn, and generally there will be no black smoke. If the network cable is fake, or if the outer skin does not have flame resistance, the network cable will be lit in a short time when the lighter is used to burn, and black smoke will be generated and there will be a great taste. This kind of network cable obviously does not meet the safety standards.历险新片《地心历险记2：神秘岛》，源于17岁的肖恩•安德森收到的一组发自无人知晓的神秘岛密码求救信号。 因为无法劝阻肖恩追踪信号来源，肖恩的继父汉克只能陪着他一起踏上这段南太平洋之行。而他们最终的目的地，是一座没几个活人亲眼见过的岛屿。那里风光旎丽，鸟语花香；珍禽异兽，应有尽有；金山火山，叹为观止；是座无奇不有的神秘天堂。小苞谷？板栗等三人听呆了。人一旦有生存的希望，力量可是非同小可的。