发布网友 发布时间:2023-10-24 00:16
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热心网友 时间:2024-12-01 13:22
全程手译……热心网友 时间:2024-12-01 13:22
From the invention of aircraft, aircraft of modern civilization has become increasingly indispensable means of delivery. Compared with other modes of transport, the aircraft has many advantages: (1) speed. At present, the jet cruising speed of 900 kmh in about. (2) of high mobility. Aircraft flying from the mountains, rivers, deserts, ocean barrier, but also according to the passenger and cargo flights to increase the number at any time. (3) safe and comfortable. According to the International Civil Aviation Organization statistics, the average per billion passenger aviation public - (Lane) - The death toll 0.04, is a common way of traffic accident deaths of a few to a few one-tenth of one percent, and tied for the rail transport security The transport mode of transport. Of course, the human impact of the aircraft is the double-sided, as - "science and technology is a double-edged sword."热心网友 时间:2024-12-01 13:23
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