1、飞行前准备,当地机场已知标高和高度表显示高度之间的差值不得超过? How many meters should the d

1、飞行前准备,当地机场已知标高和高度表显示高度之间的差值不得超过? How many meters should the difference between the local airport elevation and the indication on altimeter not be exceed during before flight procedure?

A.75英尺 75ft;

B.50英尺 50ft;

C.50英尺 50ft;

正确答案是A