• 2022-05-31
    The aircraft vanished without __________.
  • trace 踪迹

    内容

    • 0

      The _____ by which an aircraft avoids obstacles or other aircraft is termed separation.

    • 1

      The distance by which an aircraft avoids obstacles or other aircraft is termed _______.

    • 2

      An aircraft is _____ of several areas and structures that provide services for aircraft and passengers.

    • 3

      The aircraft must be placed in a flow _________ the aircraft’s route of flight.

    • 4

      Aircraft position reports are ______ if ATC can see an aircraft on radar.