除经空中交通管制许可外,在距机场中心4海里范围内,离地高度2500英尺以下不得以大于( )海里/小时的指示空速运行航空器。
An aircraft is not allowed to operate at an indicated airspeed greater than ( ) NM/hour at an altitude of not exceeding 2,500 feet above the ground at a distance of 4
nautical miles from the center of the airport except with the approval of air traffic control.
答案解析
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