超星 - L15 过关检测：词汇与结构 - 查题吧

单选题

During flight under IFR, there are no requirements for _______, and as such flying through clouds is permitted.

A. altitude
B. stability
C. visibility
D. moisture

单选题

En-route air traffic controllers ______ clearances and instructions for airborne aircraft.

A. give
B. issue
C. pass
D. send

单选题

The higher altitude allows a flight crew to start a climb earlier in case landing is _______.

A. possible
B. feasible
C. unfeasible
D. necessary

单选题

Aircraft approaching from the north must make visual contact with the airport at a ______ altitude than a flight approaching from the south, because of rapidly rising terrain south of the airport.

A. lower
B. same
C. higher
D. different

单选题

The minimum conditions for the aircraft to take off and land vary according to the type of navigation aids available, the location and height of terrain and obstructions _________ of the airport, etc.

A. in the front of
B. at the center of
C. in the vicinity of
D. at the back of

单选题

______ is a backup system providing a last layer of defense if a sequence of errors or omissions causes a dangerous situation.

A. TAWS
B. EFIS
C. GPS
D. EICAS

单选题

In the United States even when on a filed IFR flight plan, if conditions permit the _______ is responsible to maintain a watch for, and avoid other air traffic and obstructions.

ATC
B. pilot
C. engineer
D. TCAS

单选题

Which one is not included in the radio beacons on the ground?

A. VORs
B. NDBs
C. GPS
D. GPWS

单选题

In areas of radar coverage, ATC may assign ________ to IFR aircraft, also known as radar vector.

A. track
B. heading
C. route
D. flight path

单选题

_______ is the primary method for ATC to provide separation between aircrafts for landing.

A. GPS
B. position report
C. radar vector
D. experience

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