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

2???????

3?????

4???????????

5????????????

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

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

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

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

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