Radar controllers conducting radar approaches shall be _______ information regarding the obstacle clearance altitudes/heights established for the types of approach to be conducted.
A.be in possession of
B.know
C.get
D.take
正确答案是A
Radar controllers conducting radar approaches shall be _______ information regarding the obstacle clearance altitudes/heights established for the types of approach to be conducted.
A.be in possession of
B.know
C.get
D.take
正确答案是A