620.RA高度的显示位置在: The height of the RA display position at:

　一个独立的无线电度高表上 An independent RA indicator

　 PFD和ND上 PFD,ND

　 PFD上 PFD

正确答案：C

解析：

题目解析 RA（Radio Altimeter）高度的显示位置通常在PFD（Primary Flight Display，主飞行显示器）上。PFD是飞机驾驶舱内用来显示飞行参数和状态的主要显示器之一，包括高度等信息。因此，正确答案是C。

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A330机型熟悉课程试题

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