????????????????11??????????12?????? ????12???????????????“????”?????????????????,???????????“??????????”?????????,????13????

?????????“???????????????”????? ?? ?

??????,??“????”????,????,????????????????????????“?????”,???????????????13?,?????12???????????????31??????

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

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

???:????? ??“??????????”????

?? ????????????13??????

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

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

3??????

4?????????vx

5?????????

????????????????11??????????12?????? ????12???????????????“????”?????????????????,???????????“??????????”?????????,????13????

?????????“???????????????”????? ?? ?

??????,??“????”????,????,????????????????????????“?????”,???????????????13?,?????12???????????????31??????

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

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

???:?????