42. The AIS transponder is designed to transmit information ______.

词汇与结构 Air traffic control units use the term “______” when they are assigning an aircraft a transponder code.

The AIS transponder is designed to transmit information ______. A: Automatically B: Semi-automatically C: Manually D: ALS is not transmitting at all

The AIS transponder is designed to transmit information ___. A: Automatically B: Semi-automatically C: Manually D: AIS is not transmitting at all AIS

Also, the device must be able to inform the outside world that it is running low on chemicals; once again this might be accomplished by a transponder setup.

Air traffic control units use the term "______" when they are assigning an aircraft a transponder code. A: squall B: squawk C: squad D: reset

词汇与结构Mode S is designed to help avoid over-interrogation of the transponder and to allow ______ collision avoidance. A: mechanical B: alternative C: technical D: automatic

（）is used for calling and replying,and for transmitting acknowleding and relaying distress alerts. A: NAVETEX receiver B: Search and Rescue Transponder C: Emergency Position Indicating Radio Beacom D: Digital selective calling