In the AFTN, the flight plan filing time shall consist of a _______ data-time group.
A.four-digit
B.five-digit
C.six-digit
D.eight-digit
正确答案是C
In the AFTN, the flight plan filing time shall consist of a _______ data-time group.
A.four-digit
B.five-digit
C.six-digit
D.eight-digit
正确答案是C