词汇与结构____ guidance, shown on the instrument by the glideslope indicator, aids the pilot in reaching the runway at the proper touchdown point.
A. Horizontal
B. Vertical
C. Parallel
D. Precision
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词汇与结构Some aircraft possess the ability to route ____ into the autopilot, allowing the approach to be flown automatically by the autopilot.
A. signals
B. commands
C. requirements
D. power
词汇与结构The localizer provides for ILS facility ____ by periodically transmitting a 1020 Hz morse code identification signal.
A. localization
B. identification
C. correction
D. recognition
词汇与结构Modern localizer antennas are highly directional. However, usage of older, less directional antennas allows a runway to have a ____ approach called a localizer back course.
A. accuracy
B. non-precision
C. precision
D. inaccuracy
词汇与结构The glideslope____no identification signal, so ILS equipment relies on the localizer for identification.
A. transmits
B. transfers
C. modifies
D. receives