????:1????????:??????

2????????????

3???????????

4????????

5???????

?????

?????????????12??29???????????,?,??2??,???????179?????

??????????,?,????????7C2216??????????,???????????175????????6???????,????181?????????????????????????,???2???????????????????????

?????:???????2??

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

????,?????????,???????????????6??????????,???

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

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

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

?????????????????????,????,????????????????????????????“MAYDAY”,?2????,?????(??? ???)

??:??????