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Gia Linh Luu

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53. king k 188
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55. Gia Linh Luu 176
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57. Chu Đức Tuyển 174
last 3 solved tasks
Until I am measured, I am not known. Yet how you miss me, When I have flown! What am I?
I am a potato's favorite tool and I give him a lot of power. You can sit with me all day but when my energies drain my partner would only respond to your touch. What am I?
I have keys, but no locks. I have space, but no room. You can enter but not exit. What am I?

Sir Geoffrey De Havilland

Born 27 Jul 1882; died 21 May 1965 at age 82.English aircraft designer, manufacturer, and pioneer in long-distance jet flying. In 1909, he constructed his first machine and through trial and error and taught himself to fly. Since then De Havilland has been carried aloft by more than fifty aircraft. Notable were the DH-2 fighter of World War I, and the DH-4 light bomber. He established the new De Havilland Company at Stag Lane near London in 1920, beginning the long line of DH commercial and sport aircraft. De Havilland's triumph in World War II was the Mosquito light bomber, the fastest aircraft of its time. In 1943, he was one of the first to make jet-propelled aircraft, producing the Vampire jet fighter. De Havilland led the world in entering the era of jet passenger flight with its first turbine powered aircraft, the Comet in 1949.

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