????:1????????:?????????vx

2?????????

3?????????

4????????????

5????????

????

????,?????????,15??????????????????,??????135.3????,????????????5.9%?

???,????“?????????????????”??????????????????????????,5??????????????????????????????,??????????30%?????,??,??,??,??????,?????????

????????????,??????????“????”??,?????????????,???????????,????????,???????????????,?????????????????????????????????????,????,???,???????????????;???????,???????????????????“???????????”?????????????????

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