In the following four items， which one is the GBAS Facility of G
2023-11-19导航专业业务
In the following four items， which one is the GBAS Facility of GLS system provides（ ）.
A.A、ranging signals
B.B、clock corrections
C.C、VHF Data Broadcast (VDB) Signal
D.D、integrity indications
正确答案是D
