A.測距差無線電導(dǎo)航 B.測距無線電導(dǎo)航 C.測向無線電導(dǎo)航 D.測速無線電導(dǎo)航
A.測向無線電導(dǎo)航 B.測距無線電導(dǎo)航 C.測距差無線電導(dǎo)航 D.雷達導(dǎo)航
A.歸航 B.出航 C.導(dǎo)航 D.領(lǐng)航