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

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

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

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

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

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

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

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

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

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

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

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