根据第二段第三句...airline companies began to fly at higher altitudes to lower their cost—the air density (密度) is lower up there, creating less drag (阻力)for airplanes.可知。 2. What does the underlined words “de Havilland Comet” in Paragraph 2 refer to? A. An aircraft. B. A ...
The de Havilland Cometcame into fashion in the 1950s. With a closed cabin,it was able to go higher and faster than other aircraftHowever where there's a corner there's a weakspot. Windows, having four corners have four po-tential weak spots, making them likely to crash understress-such...
This is the de Havilland Comet, as mentioned earlier: It’s the world’s first jet-powered passenger plane, produced by British aircraft manufacturer, de Havilland. It was introduced into service in May 1952 with British Overseas Airways Corporation (BOAC), amid much fanfare nationwide. The plan...
B. A band. C. A planet. D. A design. 相关知识点: 试题来源: 解析 A 答案A 解析 推理判断题。下划线并非词义猜测,根据第二段最后一句“With a closed cabin,it was able to go higher and faster than other aircraft.”中的 it和other aircraft推测此词所指为一款飞机。故选A。
The de Havilland Comet I entered service in 1952, and became the first commercial airliner to be powered by jet engines. It was introduced as the flagship aircraft on the routes of the British Overseas Airways Corporation, and was hailed as a triumph of British engineering. However there were...
T he de Havilland Comet came into fashion in the 1950s. With a closed cabin, it was able to go higher andfaster than other aircraft.However, where there's a corner, there's aweak spot. Windows, having four corners, havefour potential weak spots, making them likelyto crash under stress...
Twitter Google Share on Facebook DH (redirected fromDeHavilland) AcronymDefinition DHDesignated Hitter(baseball) DHDepartment of Health(UK) DHDurham(postcode, United Kingdom) DHDownhill DHDie Hard(Sears battery; also movie) DHDeathly Hallows(Harry Potter book) ...
Early operators of the Comet The first operator of the de Havilland Comet was the British Overseas Airways Corporation (BOAC), which debuted the plane in 1952. BOAC, which would later merge to form British Airways, acquired eight Comets within a year and became one of the plane's main opera...
The first jetliner, the de Havilland Comet, was originally built with square windows. A simple aesthetic choice. Then, in 1954, two Comets disintegrated midair within a couple of months of each other. They crashed because of the square windows. A subtle yet critical engineering design flaw,...
THE DEHAVILLAND COMET AND VICKERS VISCOUNT TURBOPROP LED THE WAY 106 JETS AND SPEED THE AMERICAN AIRCRAFT INDUSTRY QUICKLY FOLLOWED THE BRITISH BY COMING OUT WITH FASTER AND LONGER RANGE JET AIRLINERS, THE BOEING 707 AND THE DOUGLAS DC-8. BTOH OF THESE AIRCRAFT HAD LONGER SERVICE LIVES 35、 ...