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3. The outer epidermis of the regular network cable also has certain ductility, also called elasticity. If the outer epidermis is inelastic, it is easy to break. Therefore, when buying the network cable, you can reduce a 0.5 meter long network cable and pull it to both sides. See if there is a crack in the middle or if the epidermis can extend to both ends. If there is no crack in the middle during the pulling process, and the epidermis can also extend to both ends, then the epidermis of this network cable meets the standard. In addition, we should pay attention to a problem. In the process of pulling, although some network cables have no cracks, there are obvious signs of whitening and thinning in the middle, which is also not in line with the standard.所有的士兵都清楚地知道一个事实，那就是身后已经没有退路。板栗见了孙鬼，听他一把鼻涕一把眼泪地将这些年的经历说了后，勃然大怒，喝命人将他拖下去打二十大板。一直以来，尼基（丹尼尔·布鲁赫 Daniel Brühl 饰）和詹姆斯（克里斯·海姆斯沃斯 Chris Hemsworth 饰）都是针锋相对的死对头。尼基认真严肃，对赛车的职业十分尊重，詹姆斯喜欢铤而走险，将赛车作为自己寻花问柳的筹码，虽然两人有着截然不同的个性，但他们之间的较量却从未停止过。 　　为了改变自己不够成熟的性格，詹姆斯和偶然遇见的名模苏西（奥利维亚·王尔德 Olivia Wilde 饰）结婚了，尼基亦找到了自己的一生挚爱并且加入了法拉利车队，而此时生活已经走上了下坡路的詹姆斯则加入了麦克拉伦车队，一对冤家再次站在了人生的战场之上。一次比赛中，天降大雨，尼基出了车祸身受重伤，詹姆斯因此夺得了冠军。可是，尼基并没有因此而放弃，在极短的时间内，尽管受到了众人的制止，但他依然毅然地回到了赛场上。Understand using virtual agents to preload pictures