航空專業用語??

想請問一下有人知道這些有關航空的專業名詞嗎??
1. aircraft depreciation
2. general administration
3.monthly lease costs
4. higher productivity
5. free in-flight catering
6. single aircraft type
7. aircraft landing fee
8. start-up carrier
9. secondary airports
10. illegal state aid
3 個解答 3