????:1???SPA??:??????????

2???????

3?????300??

4???????

5??????vx

?????11????22??????? ??????22????????????????????????,?????????,?????

???,????????,????????29????????,??????????????????????????????????15????????,??

????,?????????????,???,???????????????????????????,??????????????,?????818.6????????????????????????,???48.8%;?????,???????????488.5???,????????????????????78.6%?

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