The basic markings on runways used for VFR operations consist of runway direction numbers and _______ markings.
A.centerline
B.edge line
C.VASIS
D.ILS
正确答案是A
The basic markings on runways used for VFR operations consist of runway direction numbers and _______ markings.
A.centerline
B.edge line
C.VASIS
D.ILS
正确答案是A