更多"[单选题]“Radar” means Radio Detection "的相关试题:
[单选题]_______ is a radar system which uses reflected radio signals.
A.Primary radar
B.SSR code
C.Radar Instrument
D.Multi-Radar
[单项选择]Radio is one of ______means of sending news and information.
A. the most common
B. the commonest
C. more common
D. common
[单选题]In radio check, “I read you five” means _______ .
A.your signal is very weak
B.I cannot hear you
C.your transmission is perfectly clear and understandable
D.your transmission is reasonably clear
[单选题]The “blips” of light on the radar screen are called raw radar _______ .
A.signals
B.transmission
C.pulses
D.returns
[单选题]Radar controllers conducting radar approaches shall be _______ information regarding the obstacle clearance altitudes/heights established for the types of approach to be conducted.
A.be in possession of
B.know
C.get
D.take
[单选题]_______ radar service,the radar controller should inform the pilot that he should resume normal navigation, and give him his position and appropriate instructions.
A.When terminating
B.When providing
C.To determine
D.To exercise
[单项选择]The installation of radar is supposed to keep track of airlines in the __________.
A. velocity
B. proximity
C. terrain
D. vicinity
[单选题]_______ radar vectoring of an aircraft, the radar controller should inform the pilot that he should resume his own navigation, giving him his position and appropriate instructions.
A.In terminating
B.To provide
C.To commence
D.To determine
[单选题]If the radar receiver detects the retarding time tR=500(S 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]The _______ shall be responsible for adjusting the radar display(s) and for carrying out adequate checks on the accuracy thereof, in accordance with the technical instructions prescribed by the appropriate authority for the radar equipment concerned.
A.ramp commander
B.mechanics
C.radar controller
D.AIS officer
[单选题]_______ change should be made by a radar controller to a clearance issued by a non-radar controller without the prior approval of the latter, except when special procedures are in effect, or when circumstances necessitate immediate action.
A.No significant
B.Only a little
C.A few
D.Permitted
[单选题]Which secondary radar code below is right?
A.1309
B.2537
C.8824
D.5690
[单选题]What are the methods to transfer radar identification?
A.Physical
B.Automate
C.Landline
D.All above
[单项选择]Users of plagiarism-detection tools make a point of using the service secretly because________.
A. they do not want to ruin their business
B. they do not want to ruin the reputation of the violators involved
C. they cannot decide what amounts to actual plagiarism
D. they think it is not worthwhile
[单项选择]Radar is used to extend the（）of man's senses for observing his environment, especially the sense of vision.
A. validity
B. liability
C. capacity
D. intensity
[单项选择] (72) is an error detection code that most data communication networks use。
A. CRC
B. Manchester Code
C. Huffman Code
D. 4B/5B Code
[单选题]Which of the following is not true as concerns airport surveillance radar (ASR)?
A.It is designed to provide relatively short-range coverage in the airport vicinity
B.Its purpose is to serve as an expeditious means of handling terminal area traffic
C.It can never be used as an instrument approach aid
D.The ASR facilities are commonly called approach and departure control
[单选题]Radar works on an _______ principle.
A.detection
B.echo
C.track
D.display
[单项选择]Radar enabled the English ____________.
A. detect German planes on their way to London
B. direct the outnumbered RAF planes effectively
C. confuse German bomber pilots
D. both A and B
