_______isanon-governmentair/groundradiocommunicationfacilitywhichmayprovideairportadvisoryserviceatcertainairports.

发布于 2022-03-23 07:08:00

【单选题】
A UNICOM
B Broadcast facilities
C Radio
D Fix communication

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阿银。

这家伙很懒，什么也没写！

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