【单选题】
“PAN” is the international RTF______signal___
A. emergency
B. distress
C. urgency
D. dangerous
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答案
C
解析
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【单选题】
“MAYDAY” is the international RTF______signal.___
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【单选题】
According to ICAO definition, a condition concerning the safety of an aircraft or other vehicle or of some person on board or within sight but which does not require immediate assistance is _______ .___
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【单选题】
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【单选题】
An aircraft known or believed to be in a state of emergency should be given______over other aircraft.___
A. way
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【单选题】
管制话筒正确使用方法是：___
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【单选题】
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【单选题】
The altimeter setting used in en-route flight should be______hpa___
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【单选题】
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_______ is a service provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.___
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【单选题】
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【单选题】
SIGMET is a weather advisory issued concerning weather______to the safety of all aircraft.___
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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