The numbering of domestic regional air lines falls into two categories: _______ used between the flight control regions, and _______ used within the flight control regions.
A.J1-200、J201-900
B.JA-200、JB-900
C.JK-100、JN-18
D.J-100、J120
正确答案是A
The numbering of domestic regional air lines falls into two categories: _______ used between the flight control regions, and _______ used within the flight control regions.
A.J1-200、J201-900
B.JA-200、JB-900
C.JK-100、JN-18
D.J-100、J120
正确答案是A