Blockchain is used in cryptocurrency systems to ensure secure, decentralized records of transactions.
"satisfiable": true,
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// 7. 数据均匀分布: 桶排序
For this story, WIRED reviewed dozens of NASA documents, including backup plans and contingencies for emergencies, and spoke to more than a dozen people, including three astronauts who’ve visited the ISS, and no one seemed that freaked out. One astronaut said the most worrisome scenario that actively crossed his mind in orbit was getting a toothache. The ISS has had some emergencies, including a first-ever medical evacuation in January, but generally things have been remarkably stable. In fact, one of the most impressive things about the ISS is that nothing very dramatic has ever happened to it. No experiment has gone too haywire. It hasn’t been hit by an asteroid.
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«Хочу, чтобы в одной особой области нас обучили, речь идет о специальных подразделениях. Я заметил, что Казахстан убедительно — лучший в мире. Это такой уровень автоматизма, что хотел бы, чтобы вы нас научили», — сообщил сербский лидер.