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