??????????:????11??22????,??10??,?????????????31.9??,????14.5%??????,?7.9????,??48.0%;????4.9???????,????????20.3%?110???,???7181??,???8.3%;???????????4502?????,???20.7%?

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?? ????31.9??? ???????????????14.5%

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

2?????

3?????150

4?????vx

5???????

??????????:????11??22????,??10??,?????????????31.9??,????14.5%??????,?7.9????,??48.0%;????4.9???????,????????20.3%?110???,???7181??,???8.3%;???????????4502?????,???20.7%?

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