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