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【单选题】
超轻型飞行器航摄系统的飞行平台，相对航高一般不超过（ ）m。
A.
2000
B.
1500
C.
1000
D.
2500
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参考答案：
举一反三
【单选题】悬停状态的四轴飞行器如何实现向左移动（）
A.
纵轴右侧的螺旋桨减速，纵轴左侧的螺旋桨加速
B.
纵轴右侧的螺旋桨加速，纵轴左侧的螺旋桨减速
C.
横轴前侧的螺旋桨加速，横轴后侧的螺旋桨减速
【单选题】Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking: born of the marriage of the hang glider and the go-kart (轻型单座赛车) engine ...
A.
the weight of the hang glider and that of the ultralight airplane
B.
ultralight airplanes and military aircraft
C.
the inventiveness of John Moody and that of Octave Chanute
D.
the controls used in the Wright brothers’ flyer and those used in today’s ultralight air-planes
相关题目：
【单选题】悬停状态的四轴飞行器如何实现向左移动（）
A.
纵轴右侧的螺旋桨减速，纵轴左侧的螺旋桨加速
B.
纵轴右侧的螺旋桨加速，纵轴左侧的螺旋桨减速
C.
横轴前侧的螺旋桨加速，横轴后侧的螺旋桨减速
【单选题】Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking: born of the marriage of the hang glider and the go-kart (轻型单座赛车) engine ...
A.
the weight of the hang glider and that of the ultralight airplane
B.
ultralight airplanes and military aircraft
C.
the inventiveness of John Moody and that of Octave Chanute
D.
the controls used in the Wright brothers’ flyer and those used in today’s ultralight air-planes
参考解析：
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