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  1. CJK Unified Ideographs is a Unicode block containing the most common CJK ideographs used in modern Chinese, Japanese, Korean and Vietnamese characters. When contrasted with other blocks containing CJK Unified Ideographs, it is also referred to as the Unified Repertoire and Ordering (URO).[3] The block has hundreds of variation sequences ...

    • 20,992 code points
    • BMP
    • U+4E00..U+9FFF, (20,992 code points)
    • Han
  2. The Chernobyl disaster [a] began on 26 April 1986 with the explosion of the No. 4 reactor of the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR, close to the border with the Byelorussian SSR, in the Soviet Union. [1] It is one of only two nuclear energy accidents rated at seven—the maximum severity ...

    • Reactor design and operator error
    • INES Level 7 (major accident)
    • 26 April 1986; 37 years ago
  3. The Four Horsemen of the Apocalypse [1] are figures in the Book of Revelation in the New Testament of the Bible, a piece of apocalypse literature attributed to John of Patmos. Similar allusions are contained in the Old Testament books of Ezekiel and Zechariah, written about six centuries prior. Though the text only provides a name for the ...

  4. Washer (hardware) A washer is a thin plate (typically disk-shaped, but sometimes square) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring ( Belleville washer, wave washer), wear pad, preload indicating device, locking device, and ...

  5. 0.8–1.5% (2019, using DSM-IV-TR and ICD-10) [2] Attention deficit hyperactivity disorder ( ADHD) is a neurodevelopmental disorder characterised by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and otherwise age ...

  6. Columbia Accident Investigation Board. On Saturday, February 1, 2003, Space Shuttle Columbia disintegrated as it reentered the atmosphere over Texas and Louisiana, killing all seven astronauts on board. It was the second Space Shuttle mission to end in disaster, after the loss of Challenger and crew in 1986.

  7. en.wikipedia.org › wiki › FIFAFIFA - Wikipedia

    FIFA.com. The Fédération internationale de football association ( French for ' International Federation of Association Football '; abbreviated as FIFA and pronounced in English as / ˈfiːfə / FEE-fə) is an international self-regulatory governing body of association football, beach soccer, and futsal. It was founded in 1904 [3] to oversee ...

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