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

2??????

3?????51??

4???500?4????????

5?????QQ?

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

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

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

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

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

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

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

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

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

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