???????????????????1?7??????????? (?? ??????)??????????????????,7???????????????,????(?????“??”)B737??????????????????????,???1000????????????????,??2????????????????,?????,?????

7???,?????????????(?)

?????????,??????????5??,?????????????????????????????,??,????????????????????“?”?

????????????????????????,????????????,??????????????,?????????????????????(???)

???????:??? ??“????”

?? ????????????????

????:1?????:???????????

2???????

3??????????

4???????

5???95???

???????????????????1?7??????????? (?? ??????)??????????????????,7???????????????,????(?????“??”)B737??????????????????????,???1000????????????????,??2????????????????,?????,?????

7???,?????????????(?)

?????????,??????????5??,?????????????????????????????,??,????????????????????“?”?

????????????????????????,????????????,??????????????,?????????????????????(???)

???????:???