| 2021 1 1 | | | | | | | | | | | 2020 | | | | | | | | | | | | | | 3 | 1 | | | | | | | 52 | | | | | | | | | | | | 75.8% | 11% | 12.7 | | | | | | | | | | | | | | | | | | | | 5A | | C 919 | | | | | | | | | | | 3000 | | | | ＋ | | | | | | | 2 | 4 286 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2021 | | | | | | | | | | | | | | | | | | | | | | | | | |