题目内容

Flight attendants may stand at the exits when passengers are boarding and _____ the aircraft.

A. deviating
B. deporting
C. exiting
D. taking

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Airport security provides defense by attempting to stop would-be _____ from bringing weapons or bombs into the airport.

A. strangers
B. attackers
C. gardeners
D. frontiers

A runway _____ is an incident where an unauthorized aircraft, vehicle or person is on a runway.

A. incursion
B. collusion
C. collision
D. concision

_____ runways provide both horizontal and vertical guidance for instrument approaches.

A. instrument
B. visual
C. precision
D. non-precision

The _____ runway is the runway at an airport that is in use for takeoffs and landings.

A. positive
B. inactive
C. negative
D. active