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

??,??74??,????????90??????????????????????????,????????????????????????????????,????????????20.1??????17.5???11.8???????8.1????????8.9??????????????,??10????????????1??10???5???10??6?????????????,??8????????11?,??????????????????17?????????????????21????

10????????????????1??-10????????7????????????????,?16-26???????????,???102?????,??34?,???6??,???62??10?4???????????????“????????????????????????????”????????????????????

??????????????,??????,???,??????????,???,?????,?,??(????) ??:???????????? “???????”_????

?? ?????????????? ?????????90???

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

2?????

3?????vx

4???????

5????????

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

??,??74??,????????90??????????????????????????,????????????????????????????????,????????????20.1??????17.5???11.8???????8.1????????8.9??????????????,??10????????????1??10???5???10??6?????????????,??8????????11?,??????????????????17?????????????????21????

10????????????????1??-10????????7????????????????,?16-26???????????,???102?????,??34?,???6??,???62??10?4???????????????“????????????????????????????”????????????????????

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