题目内容
词汇与结构In most such aircraft, any engine failure results in a rejected takeoff as a matter of course, since even ______ the end of the runway is preferable to lifting off with insufficient power to maintain flight.
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词汇与结构If an obstacle needs to be cleared, the pilot climbs at the speed for ______ climb angle (Vx), which results in the greatest altitude gain per unit of horizontal distance traveled.
词汇与结构If no obstacle needs to be cleared, or after an obstacle is cleared, the pilot can accelerate to the ______ rate of climb speed (Vy), where the aircraft will gain the most altitude in the least amount of time.
词汇与结构Generally speaking, Vx is a lower speed than Vy, and requires a higher ______ attitude to achieve.
词汇与结构For balloons, helicopters and some specialized fixed-wing aircraft, no _______ is needed.
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