????????3??3???

????:???????:??????vx

????????????6??8?? (?? ??)?8???????????????????,?,6?????7?15?????????????8?????????????????15????,?????????????????????,??,?????????259.0????????????????????196.5????

???,?????3??????????????3??????0.03?0.49???????????8???15?????,?????????

8????15?,?????????13.13?????(?????????18.5??),????????????16900??

??,?,?????????24???,???????????????????????????????1?4??????????????,??;????????(??) ??:???