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

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

3??????????

4??????vx

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

??????????2??????????20?? ???????,????????(VDA)19????????,????25%?????????????“???????????”?

??????,“??????”,???

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

???VDA????DIHK????????,???13%?,???

?????????18?,???????????25%??????,??????????????4?????2?? ????:?????????