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