【单选题】
SSR code is a______digital number.___
A. two
B. six
C. one
D. four
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答案
D
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【单选题】
Traffic information should include_________
A. direction of aircraft concerned
B. weather
C. speed of aircraft
D. heading of aircraft
【单选题】
The altimeter setting used in en-route flight should be______hpa___
A. 1019
B. 1013
C. 2992
D. 1000
【单选题】
Larger separations than the specified minima should be applied whenever in.___
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B. bad weather
C. a raining day
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【单选题】
_______is air traffic control service for controlled flights in control areas___
A. Route service
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C. Area control service
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【单选题】
_______ is a service provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.___
A. alerting service
B. information service
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D. assistance service
【单选题】
Visibility is the ability as determined by atmospheric conditions and expressed in unit______.___
A. meters
B. feet
C. distance
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【单选题】
SIGMET is a weather advisory issued concerning weather______to the safety of all aircraft.___
A. significant
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【单选题】
Flight level is a______of constant atmospheric pressure which is related to a specific pressure datum 1013.2hpa.___
A. standard
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【单选题】
Air traffic means all aircraft in flight or operating on the______of an aerodrome.___
A. highway
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【单选题】
The true airspeed is the airspeed of an aircraft relative to______air.___
A. turbulence
B. smooth
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【单选题】
Air speed is the speed of an aircraft relative to its surrounding______.___
A. traffic
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【单选题】
“Aircraft” means any machine that can derive support in the______from there actions of the air other than there actions of the air against the earth's surface.___
A. atmosphere
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【单选题】
If the radar receiver detects the retarding time tR＝500mS between transmitting pulse and receiving pulse,now the target is______km from the radar station.___
A. 150
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【单选题】
“Advise______”means“ Tell me what you plan to do”.___
A. wanting
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【单选题】
The recommendation is advisory in nature.The decision as to whether the flight can be conducted safely rests solely with the______.___
A. controller
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【单选题】
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【单选题】
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【单选题】
In the AFTN,the flight plan filing time shall consist of a______data-time group.___
A. four-digit
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C. six-digit
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【单选题】
“______”is a notice containing information concerning the establishment,condition or change in any aeronautical facility service procedure or hazard,the timely knowledge of which is essential to personnel concerned with flight operations.___
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【单选题】
“______”means visibility,cloud and present weather better than prescribed values or conditions.___
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【单选题】
“______”is the height above the ground or water of the base of the lowest layer of cloud below 6000m covering more than half sky.___
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【单选题】
管制员在对空指挥过程中，应当主动地控制一句管制指令中所包含的管制指令的内容。一般情况下，管制员发布的一句管制指令中，包含的管制内容不应当超过___项
A. 1
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【单选题】
当观察到两个或多个雷达位置指示符相近，或观察到在同时作相似的移动以及遇到其它引起对目标怀疑的情况时，管制员应当___。
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【单选题】
“AIP”is“”___
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【单选题】
An air show may with the consent of the______be the reason for an aerodrome being closed to all traffic for a few hours.___
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【单选题】
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A. a ground power facility
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【单选题】
The magnetic compass indicates the______in which an aircraft is flying with respect to the magnetic north pole.___
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
________is the ratio of true air speed to the speed of sound.___
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