????:1?????????:??????vx

2?????

3???498??????

4?????

5???300???????

???11??26?? (???? ????)????“????S”26????????????????????????????????

?,??????????26?8????30????,??????????????“?S”??????????????????????,??120????????????????????????????????,“?????S”?????????????????????49????????????????????????,?????????????

?“???S”???????????7?????????,????,“?????????????S”????????????????

????????????«?»?,“??S”???????????????????????????,?????????????,?????

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

“????S”???“????????????”?????“??S”??27???,????600???,?1.4?????(??????????????????????????????) ???????????:????????????