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

2???????

3?????????100?200?

4???????

5???????

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

??,????????????,??42.3?????????????????????,?????????????15.3%,??????????????????????50%,??????????????????????????111????????????????,?,?????????????????,?????7.3?????

???? ?:??11??,??????????6400???,??????35%,?????,??????1/3,???????

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

(??)

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