During flight, pressures on the upper and lower surfaces of the wing are _______ ．

单选题

The system to be tested operated abnormally during last flight leg.

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单选题

Procedures shall be provided for all airplanes for all cases of engine failure during takeoff and in flight.

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单选题

THE NO SMOKING SIGNS IN THE CABIN STAY ON PERMANENTLY DURING FLIGHT. 客舱内的禁烟标志在飞 行中始终保持常亮。

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问答题

ferry flight

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单选题

gather data about the impact ofits low-boom design,which the agency hopes will address the single biggest challenge of supersonic flight.Flying faster than the speed of sound produces shock waves that result in a loud booming sound.The air does not know that the airplane is coming,Peter Coen,a NASA project manager for supersonic technology,explained during the press conference,Because no one liked hearing that noise,the Federal Aviation Administration and similar international organizations ban

答案解析