INS是（）的缩写。

A.测距仪
B.多普勒甚高频全向信标
C.仪表着陆系统
D.无方向信标

A.Traffic Message Service-Broadcast
B.Traffic Information Server-Broadcast
C.Traffic Information Service-Broadcast

A.World Geodetic System
B.World Geodetic mensuring System
C.World Globle System
D.World Globle mensuring System