The marker beacon of the instrument landing system is use to provide ____ information.
A. Predetermined glide slope
B. Runway centerline
C. Distance from the airport
D. Flying altitude
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Boeing's "Scan Eagle" adopts ____ as launch method.
A. Zero-length launch
B. Carrier-borne air launch
Catapult launch
D. Container launch
The overload of a UAV when it touches the arresting net should not lager than ____.
A. 3g
B. 4g
C. 5g
D. 6g
When determine the launch window for Halley’s Comet probe should chose: ____.
A. The annual launch window
B. The monthly launch window
C. The diurnal launch window
D. Zero window
The injection point of a spacecraft refers to ____.
A. The termination point of the thrust of the second-stage rocket engine
B. The initial position of the spacecraft into orbit
C. Apogee
D. Perigee
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