????:1??????100???:????QQ?

2????????????

3???????

4??????????

5???150???????

??????????????????????2????????????????15?? ????,??14??????????,???(NTSB)???????????????????,????,??????????????????????“??”?,??“?????”?

??????????????????,1??????????????????29?????,??????????????“?”??????,????????????,?????,?????????????67????

????????????1????????????29??,???,???????????????????1??????30???????????????????????? ?? ?

?????14???,“???????”???????????,??????,???

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

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

?,???“???”?????,???,?,?????????

??,????????????????,???????,?????????????

??????????????,??????????????278??????????(85 ?),??????,??,“??????”

????????:???