_______ is a n LF/MF NDB used as an aid to final approach.
A.Compass locator
B.Radial
C.Centre line
D.Runway centre line
正确答案是A
_______ is a n LF/MF NDB used as an aid to final approach.
A.Compass locator
B.Radial
C.Centre line
D.Runway centre line
正确答案是A