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

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

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

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

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

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

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

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

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

??????:??

??

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