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

2????????

3??????

4??????vx

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

????????????11?22??????????? (????????)22???????,??????????????????????????????“????? ????????????”?????????????????????,?????????????,???????“????????????????????,????????????”,????,?????

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

??????? ???????

????,?????????“??????”????,?????????????????????,????1???????,2????????;??7???(???????)?????????????????????????,???,??????????,?,???????????????,??????????32.8?,?,?????36??,?250???

??,???,????????????????????,???(B?????????????)??,???????????59.6%?????????????,????????,????????????????????????????

?????????????????,???????????????,?5???????????22???????,????216?????,???????110???????,????“????????????????”?????44??????????

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

????:?????????