题目内容
T or F 490This aircraft has encountered communication problem.[音频]
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T or F 512The pilot requests to go back to land due to a fire in the avionics bay.[音频]
T or F 519The pilots requested first landing and emergency services due to engine fire.[音频]
T or F 526The pilot requests ambulance and first aid due to an electrical fire.[音频]
T or F 541The pilot requests to divert due to the severe vibration of the aircraft.[音频]
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