题目内容
Airport works as a _____ center for the landing and takeoff of aircraft.
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Airports provide transportation both for people and _____.
An aircraft is _____ of several areas and structures that provide services for aircraft and passengers.
An airport _____ is a building at an airport where passengers transfer between ground transportation and the facilities that allow them to board and disembark from aircraft.
Flight attendants may stand at the exits when passengers are boarding and _____ the aircraft.
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