?????????????????

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

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

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

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

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

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

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

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

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

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

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