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

2?????vx

3????????

4????????

5?????90????????

????8???10? ??(?????????????????“????”)?,?1?????????????7????????,??????11403????????,??????????122.6?????,?12%?????????????11%?

??7??1776?,?18.5?,??3??1700??

??,???(?????????????????????)???(???????)?????(?????????????)?1????????????????7???15%?22%??????2%??????

?????????,????????????6??,?17???????????????,??????????????????????????,?,?????(??????) ????:??