【单选题】
支承板用于已加工平面的定位，限制___个自由度。
A. 2
B. 12
C. 9
D. 0
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答案
A
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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
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【单选题】
Larger separations than the specified minima should be applied whenever in.___
A. turbulence
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【单选题】
_______is air traffic control service for controlled flights in control areas___
A. Route service
B. En-route fly service
C. Area control service
D. Deviation control service
【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
C. rescue service
D. assistance service
【单选题】
Visibility is the ability as determined by atmospheric conditions and expressed in unit______.___
A. meters
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C. distance
D. odometer
【单选题】
SIGMET is a weather advisory issued concerning weather______to the safety of all aircraft.___
A. significant
B. changeable
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D. condition
【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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D. number
【单选题】
Air traffic means all aircraft in flight or operating on the______of an aerodrome.___
A. highway
B. hanger
C. maneuvering area
D. terminal
【单选题】
The true airspeed is the airspeed of an aircraft relative to______air.___
A. turbulence
B. smooth
C. undisturbed
D. the
【单选题】
Air speed is the speed of an aircraft relative to its surrounding______.___
A. traffic
B. airmass
C. clouds
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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
B. 120
C. 100
D. 75
【单选题】
“Advise______”means“ Tell me what you plan to do”.___
A. wanting
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C. ideas
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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】
“There are broken______along the entire route between niner and one one thousand feet at the present time.”___
A. radial
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【单选题】
Th evertical speed in dicator measures______of climb or descent.___
A. time
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【单选题】
A magnetic compass is the______air navigation instrument.___
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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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【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.___
A. Weather clear
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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.___
A. roof
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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___。
A. ：根据进程单和现有雷达信息仍可以提供雷达管制服务
B. ：向移交方了解是否是航空器的原因
C. ：应当采用两种以上识别方法进行识别直至确认为止
D. ：首先报告领班主任
【单选题】
“AIP”is“”___
A. Air Information Publication
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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】
Who will be in charge for a flight?___
A. The first officer
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【单选题】
“APU”is______.___
A. a ground power facility
B. an air boarding 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.___
A. level
B. bearing
C. route
D. direction
【单选题】
VHF communication frequency is_________
A. 100MHZ～350MHZ
B. 10MHZ～136.97MHZ
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【单选题】
The rmalth under storm is caused by_________
A. heating imbalance of the earth’s surface
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【单选题】
Which is not included in a Flight Plan.___
A. Aircraft identification
B. Names of the crew members
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【单选题】
________is the number assigned to a particular multiple pulse reply signal transmitted by a transponder.___
A. SSRsignal
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【单选题】
________is the ratio of true air speed to the speed of sound.___
A. Mach number
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_______is a specified area within or over which there may exist activities constituting a potential danger to aircraft___
A. Active area
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【单选题】
_______istheactualflightpathofanaircraftoverthesurfaceoftheearth___
A. Flyingpath
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【单选题】
_______isageographicallocationinrelationtowhichthepositionofanaircraft,isreported___
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