正规的机场标高通常是（）高于海平面的高度，以米（货英尺）为单位标出

A 跑道入口中心点

B 跑道最高点

C 机场活动区最高点

解析

B选项是正确的 ICAO的解释是着陆去的最高点的高度称为机场标高

The elevation of the highest point of the landing area (ICAO). Aerodrome elevation is measured to an accuracy of 1 ft (or 1/2 m). The aerodrome elevation is prominently displayed at the air traffic control tower. Also called above airfield elevation and airport elevation.

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