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Mark I often refers to the first version of a weapon or military vehicle, and is sometimes used in a similar fashion in civilian product development. In some instances, the Arabic numeral "1" is substituted for the Roman numeral "I". "Mark", meaning "model" or "variant", can itself be abbreviated "Mk." ==Military and weaponry== *Mark I tank (1916), the first tank to be used in combat *Supermarine Spitfire Mk I (1938); Royal Air Force fighter aircraft *Mark I Fire Control Computer; United States Navy fire control computer used in World War II surface ships *Mark I Nuclear Weapon (Little Boy); First nuclear weapon used in combat *The Mark I NAAK, an auto-injector carried by military personnel for use in case of nerve agent attacks *Mk 1 Underwater Defense Gun; 1970s United States Navy dart-shooting underwater firearm *Morey MK 1 Knife (1991); military-style close-combat weapon *Mk 1 grenade; the first American-designed grenade used by American forces in World War I *Mark I trench knife; a combat knife carried by US forces after World War I *Patrol Boat, River ("Mark I PBR", 1966); 31-foot version of the US Navy riverine patrol boat 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mark I」の詳細全文を読む スポンサード リンク
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