题目内容
One of the purposes of ATC system is to _____ the flow of traffic.
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The standard procedures of exchanging the flight controls are highly _____.
An airplane is usually suggested to fly a regular traffic pattern to more safely _____ with other aircraft.
Airport manager may sometimes _____ an active runway selection that is not the one most nearly aligned with the wind.
International wide-body aircraft need to carry _____ amounts of fuel.
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