Airport lighting system should be opened twenty minutes before the aircraft is expected to _______ .
A.takeoff or land
B.taxi or fly past outer marker
C.start up or enter the local control area
D.pushback or enter the local control area
正确答案是A
Airport lighting system should be opened twenty minutes before the aircraft is expected to _______ .
A.takeoff or land
B.taxi or fly past outer marker
C.start up or enter the local control area
D.pushback or enter the local control area
正确答案是A