题目内容

词汇与结构Around busy airspace there is often a ______ requirement that all aircraft be equipped with a mode C or mode S transponders.

A. regulate
B. regulation
C. regular
D. regulatory

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词汇与结构Mode S transponders are compatible with ______ the mode C signal.

A. transmitting
B. transiting
C. transporting
D. transacting

词汇与结构Without the pressure altitude reporting, the air traffic controller has no display of ______ altitude information.

A. acute
B. special
C. accurate
D. specific

词汇与结构Without the pressure altitude reporting, the air traffic controller must rely on the altitude reported by the pilot ______ radio.

A. by
B. in
C. via
D. over

词汇与结构The Traffic Collision Avoidance System installed on large aircraft needs the ______ information supplied by transponder signals.

A. altitude
B. attitude
C. speed
D. heading