国际民航组织（ICAO）新的飞行标准。（）A.New flight standard of internati

单项选择题

国际民航组织（ICAO）新的飞行标准。（）

A.New flight standard of international civil aircraft organization (ICAO).
B.New fly standard of international civil aircraft organization (ICAO).
C.New fly standard of international civil aviation organization (ICAO).
D.New flight standard of international civil aviation organization (ICAO).

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