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

2??????

3?????????

4????????

5?????????

????????(6????????19???????????????????)??,???

???????3.46??????,???,

???????????????????????????????7????????????(????)2.13????????,??????????????,??;

?????????????????????????????????????4??(???)0.69??,?,???,????????????????????????,??;

???2????0.64??????????,????????????,?????

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