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

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

????????????7?6??? (? ??)6???,?????????????200??,?????????????????????

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

?????????????,?????????A321?,?????????????????????,????,??????5????????????????8????,?????????1200???????

???????,???????????????????????????????,??5???6??

???????,?????????????????,????????????????????????????????8????????12???????,??,??20??,??????2000?????????????????????????(??????)

??:???