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

2?????????

3????????vx

4??????

5?????????

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

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

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

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

??????????,???“????S”???,???

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