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

2???????

3???????

4????????

5???????????

???????(????):??,????,??????????????????,???

??????,?????????3???????????????????????????????????????????????????,???37%????????

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

????,??????????????????????,?????????????????????,????????????????????3600?????2.4???????????????????

????????,?????????????????????,????????????????VR???????????;????????????,?????,??????????

????,???????????,??????????50????????????????,???,???????????????,?????????????????????,???50%??????????

????????????????,???????????????????????????600?????????,????,??104.55?8??154.61?????????,??????73.57????????????

????,???????????,????;???????,?????????,????,????

???????????????????????,?????????????????,???60????????2696.9?????????,?????????????20.9%;??20.6????????,??13.5%;???????????????????????? ??????????:?????????