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1 天前 · Kathleen Genevieve Ledecky ( / ləˈdɛki / lə-DEK-ee; born March 17, 1997) [ 6] is an American competitive swimmer. She has won nine Olympic gold medals and 21 world championship gold medals, the most in history for a female swimmer.
4 天前 · The Royal Australian Air Force ( RAAF) is the principal aerial warfare force of Australia, a part of the Australian Defence Force (ADF) along with the Royal Australian Navy and the Australian Army. [ 4] Constitutionally the Governor-General of Australia is the de jure Commander-in-Chief of the Australian Defence Force.
1 天前 · Australia competed at the 2024 Summer Olympics at Paris from 26 July to 11 August 2024. Australian athletes have appeared in every Summer Olympic Games of the modern era, alongside France, Great Britain, Greece, and Switzerland. As Brisbane will stage the 2032 Summer Olympics, Australia and the United States, the next nation to host the 2028 Summer Olympics in Los Angeles, marched before the ...
3 天前 · Amazon has a reputation as a disruptor of industries through technological innovation and aggressive reinvestment of profits into capital expenditures. [ 10][ 11][ 12][ 13] As of 2023, it is the world's largest online retailer and marketplace, smart speaker provider, cloud computing service through AWS, [ 14] live-streaming service through Twitc...
2 天前 · Elizabeth I (7 September 1533 – 24 March 1603) [ a] was Queen of England and Ireland from 17 November 1558 until her death in 1603. She was the last monarch of the House of Tudor . Elizabeth was the only surviving child of Henry VIII and his second wife, Anne Boleyn.
4 天前 · e. The Internet (or internet) [ a] is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) [ b] to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array ...
2 天前 · Hydrogen peroxide is a reactive oxygen species and the simplest peroxide, a compound having an oxygen–oxygen single bond. It decomposes slowly into water and elemental oxygen when exposed to light, and rapidly in the presence of organic or reactive compounds. It is typically stored with a stabilizer in a weakly acidic solution in an opaque bottle.