????:1??????????:???????vx

2??????

3???????

4?????????

5?????

?????????????????????11???????22???? (? ?)??22???,9???105,??????;?????1.2%,????????????14.4%,???

???????,????20??(????)??????,???????????????????????,???????????

?,???13??????,????

??,19???????????????????(??)??123,??,????????18???????????????????????,??????,19??(????)????????????????2.5%,????????????28.7%?????????????????????????????????????????????????????????????????????????

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