?????????????????
?2???15?????????? ??,??????????14??,??(NTSB)????????????????,??,?????“??”???,????????????“???”?
??????,1??29??,??????????????“???”??,???,???????????,???????????????????????67????
????????????????14??,“??”?,?????,??
??????,???,???“?”??,???????????,?????,???????????????
????????????????????,????????????,??“???????????????????????”?????,??????????????????,“????????????”????????????
???????,?“??????????”?,??????????????,???,??
????,?,??????????????????????,???????????????????????
??,????????278??????(85 ??????),???????,??????????????????,“???”
?????????????:?????