???6?????13???? ??????1.5??????13?????????????????“?????,????????????”??????????????????????????

???????????????????????????????30???

????????,??,????????????????,???????????;???????????????????,????????????????;???????????????????????????,?????????;??,?????????????????????;????????,?????????????????????1.5?,??????????????????????????

?????(?????????????????) ?????:???? ??“???????”

?? ?????1.5????????????? ?????

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

2??????vx

3???????

4????????????

5???????

???6?????13???? ??????1.5??????13?????????????????“?????,????????????”??????????????????????????

???????????????????????????????30???

????????,??,????????????????,???????????;???????????????????,????????????????;???????????????????????????,?????????;??,?????????????????????;????????,?????????????????????1.5?,??????????????????????????

?????(?????????????????) ?????:????