A.精密進(jìn)近程序 B.非精密進(jìn)近程序 C.目視盤旋進(jìn)近程序 D.雷達(dá)進(jìn)近程序
A.30° B.5° C.10° D.15°
A.60M B.55M C.30M D.15M