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

2???????????

3?????????

4?????vx

5???????

????2????????????4???? (?????? ?)?????4??????,???12?????????,?????????????????(1???28????2???????4?????),???60???????,????5.1???????????,???????????23.7%?66.3%,????

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

???,?,???,?????????????????????????????36???16.2??,??????59.4%????????????????????????????27.1%,?10%????55.3%?

???,?,??,?,??????????????10???,?10.1??????10.2???????,??23.9%????30.9%?

?,???“?”?????,??,????????????????????????(?????????????????) ????:??????????