题目内容

词汇与结构1.Depending the type of ______, the transponder sends back a transponder code to help air traffic controllers to identity the aircraft.

A. communication
B. discussion
C. consultation
D. interrogation

查看答案
更多问题

词汇与结构Mode S is ______ in controlled airspace in many countries.

A. possible
B. mandatory
C. indispensable
D. necessary

词汇与结构Some countries have required that all aircraft ______ Mode S, even in uncontrolled airspace.

A. be equipped with
B. be equipped on
C. be equipped by
D. be equipped in

词汇与结构Secondary Surveillance Radar is referred to as “secondary”, to ______ it from the “primary radar”.

A. isolate
B. keep
C. separate
D. distinguish

词汇与结构Primary radar works by ______ bouncing a radio signal off the skin of the aircraft.

A. positively
B. passively
C. objectively
D. subjectively

答案查题题库