????:1????????:??90???????

2?????????

3?????150????

4?????????

5????????

?????????7??????????8? ???????????7??????????????,?????????

?????6???30??????,?,??????2.44??????,????????3??????????????4.55?????????,??????????????????????????????,??????????????3????????????????

?,???????????,????????????????7?19??????,???????,??,??????

2018?????????10????2019?3?????????,?????????,????????346??????????????,??737 MAX 8???

2021??????1??????????????????,?,???,?????,????????????25???????,?,??????????????????????????1??????????7??????????????????????,???????????????,????????????????

???????????????5???????????????????14?,????,?2021??????????,?????????????????????????????7???????7???????????????????????????????????????????????,?????????

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