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