题目内容

52.An airport includes all taxiways, inactive runways, holding areas, and some transitional aprons or intersections where aircraft arrive, having _____the runway.

A. left
B. vacated
C. started
D. landed

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Any aircraft, vehicle, or person walking or working in airport areas is required to have_____from Ground Control.

A. clearance
B. permitted
C. allowed
D. approval

GMR is used by Ground Control as an _____tool to control ground traffic, particularly at night or in poor visibility.

A. another
B. additional
C. important
D. vital

The most important concept of IFR flying is that separation is maintained ____of weather conditions.

A. no matter
B. whatever
C. regardless
D. however

ATC monitors IFR flights on radar, or through aircraft position reports in areas where radar____is not available.

A. cover
B. coverage
C. service
D. monitor