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