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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.一来到启明办公区，陈启就看到付宇锋、顾小玉等人一脸惊讶的围在一台电脑前。Define a factory interface. Q: How will it be realized? A: Declare a factory abstract class　　《校长》：60年代，社会清贫，但求学者众。一位执笔忘饭的校长与善良淡雅的王老师让一座天台学校成为童年岁月里最温暖的家。　　刘学栋回到济南刘掌柜大喜，众人为他接风，这时妓女莲花撞上门告诉他：洪二要MyDoSth+=Print;好小子，算你惨，我们后会有期。