题目内容
The localizer provides for ILS facility ____ by periodically transmitting a 1020 Hz morse code identification signal.
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The glideslope____no identification signal, so ILS equipment relies on the localizer for identification.
Hold in the ____ of the airport if required, then fly to a position from where he or she can obtain sufficient visual reference of the runway for a safe landing to be made.
The whole of the approach is defined and published in this way so that aircraft can land if they suffer from radio failure; it also allows instrument approaches to be made ____ at airports where air traffic control does not use radar or in the case of radar failure.
Radar vector refers to the provision of headings on which the controller expects the pilot to ____ his aircraft.
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