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

2?????vx

3????????

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

5?????????800

?12????18???????? (??????????? ?)???18??,?11????,???,????,???????????????????????????????,???

??,????,1?????????????11??????,????????30727.49??????????????????,???????10%???????????????,????13521.21??????????,???12.1%;???????????9709.69????????,??????16.7%?

?,??,1????11???????,???6966.74??,???????21.2%???,??,??,??????56.4%?87.2%?

??,????????????,1????????11??,???????8.54???,?????2.7%???????????????,??16.1%?

???,1????11???,????????????6.28??????????2425.46??????????,?1.7%????4.4%??,????????,??17.8%?11.7%?(????????) ???????????:???????????