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

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

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

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

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

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

??,?????“????”?,?,???????,????

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

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

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

??

??:???????????,??????????,??????????????