| 2021 1 1 | | | | | | | | | | | | | | 2020 | | | | | | | | | | | | | | | | | | | 3 | | 1 | | | | | | | | | | 52 | | | | | | | | | | | | | | | | | 75.8% | 11% | 12. | 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | 5A | | | | C 919 | | | | | | | | | | | | | | | 3000 | | | | | | ＋ | | | | | | | | | | 2 4 | 286 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2021 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |