词汇与结构Localizer and glideslope carrier frequencies are ____ so that only one selection is required to tune both receivers.
A. seperated
B. matched
C. paired
D. mated
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词汇与结构Localizer and glideslope signals are displayed on an indicator in the instrument ____. This instrument is generally called the omni-bearing indicator or nav indicator.
A. board
B. panel
C. table
D. stand
词汇与结构The pilot controls the aircraft so that the indications on the instrument remain centered on the display. This ensures the aircraft is following the ____ centreline.
A. ILS
B. IGS
C. VOR
DME
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
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