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Perhaps you have heard the DFU mode of iPhone. The full name of DFU is Development Firmware Upgrade, which actually means the forced upgrade and downgrade mode of iPhone firmware. For example, if there is an error (1) or error (6) when you downgrade the firmware of the iPhone, then when you restore or downgrade the firmware, you need to put your iPhone into DFU mode to completely downgrade.Hearing this, I think of the famous carnivorous fish-sawtooth salmon, which lives in tropical waters and fears almost all creatures living with them, including crocodiles, which are known as freshwater overlords, and a more familiar name, namely "piranha". However, the serrated salmon has made such a "world-famous" reputation for its small size. In addition to the large number, In addition to his fierce temperament, It is also closely related to their unique tooth structure, The teeth of salmon, Is sharp on both sides, The middle is sharp and densely arranged, and has a strong cutting function for all kinds of skin and meat. Therefore, although its mouth is not large, it can basically tear off a large piece of meat with one bite. Similar examples include the teeth of great white sharks, which also have such functions. However, the individual size of great white sharks is too large to be compared with serrated salmon, and its lethality cannot be compared.TelecommunicationsIndustrial Revolution 4.0-Intelligent Era: In the next 10 years, it will enter the Industrial 4.0 Era and realize the transformation from "automation" to "intelligence". Through CPS (Cyber-Physical System) network, real-time connection, mutual identification and effective communication among people, equipment and products are realized, and "personalized" customized commodities are tailored for consumers.当世界只剩最后8秒，你敢不敢为爱勇敢一回？女博士都晓晓一直喜欢隔壁一起长大的高文博，却不敢表白。高文博因失恋不相信爱情，母亲刘艳萍决定给他找个好姑娘，让他从失恋的状态中走出来。偶然的机会，都晓晓给闺蜜代班当起了红娘，而她要介绍的人竟是高文博；都晓晓很不情愿地把罗微微介绍给了他。都晓晓因做代班红娘被研究所发现并解聘，她正式做起了红娘工作。出乎意料的是：罗小珊隐瞒了自己是一位单亲妈妈，是为了给孩子找一个父亲才相亲的。高文博得知情况，当起了孩子的临时爸爸，与都晓晓、罗微微一起照顾孩子。都晓晓按耐不住，向高文博表白，两个人终于走到一起，幸福地生活下去。When the meat quality is not a weakness (above 30 or so), the damage will avalanche by more than half, and when the meat quality is above 90, it will be cut by half again.