??2???????15??? ?????????????,??????????????14??????????????????????,???(NTSB)?????????,??????????????????????,??????“??”?????,?“???”?
?,1??29?,???“???????????”?????,?????,?????,??????????????67???
????????????14????????????,“???????????????????????”??,????????????????????,?????
???????????,??,???“??????”????,????????????????????????,????????????????????????????????????,???
??,??,?“??????????????????????”?????,????????????????????????????????,“?”???????????????????
??,??“??”??,?,???,??
???,??,???????????,???????????????????
??,????278????????????????(85 ???????????),?????????????????,?,“???????????????????????”
?????????????:????????
37????????????????????
????????????139??24134?
????????????????????
????|?????????
????:??????“???”??????
??????????“???”????????
?????3???????????????
?????????4????????????
??????????????????
??????:?8050??,22??????
???«???»???????????(?)
?????3???????????????
??????????5?7??????????
«?????»??????:????????
??:??????0.7???????5.84?
???????:??????????????
62?????????????????????
????????2300???????????
“????”?????????:??????
??:???????????????????
?????????????????????
????????:????????????
???:?????????????????
????????2017???
??20???????????????