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A cut wireEarlier this year, a blackmail software called "WannaCry" began to attack the Internet, from Chinese universities to British hospitals. In April this year, IDT, a Newark, New Jersey-based telecommunications company, suffered a similar attack, which was discovered by Goran Ben-Oni, the company's global chief operating officer. As Ben Oni said in an interview with the New York Times, he immediately realized that this blackmail software attack is different from other attacks against companies. It not only steals the information in the databases it infiltrates, but also steals the information needed to access these databases. This kind of attack means that hackers can not only obtain this information quietly, but also continuously monitor who accesses this information.Chapter 6该剧以赖天佑父女，林通海父子，黄昆山父女和王胜天，王胜志兄弟为故事主要人物线索，表现了两代四家人在商场竞争中的社会价值，人情义理，亲情，友情，爱情和人性的真善丑恶。　　The creepage distance is divided into two grades, and the creepage distance of 300V grade is ≥ 5 mm; Creepage distance of 600V grade ≥ 7mm. The creepage distance is designed for 220V voltage according to 300V grade, and the creepage distance is designed for 380V voltage according to 600V grade. For 220V and 380V high-power parts, character marks are applied to allow cuts in PCB design to meet the requirements of creepage distance.For those who want to improve their thinking ability, it is a shortcut to exercise their classification ability. When you can classify things effectively, you will find that complicated things are not complicated but can be very simple, and most of the problems without ideas and methods are actually known to you. However, this kind of exercise is not easy and requires hard work and training.