????:1?????:sn???????

2??????v

3????????

4???????

5???????

?????2????????????????10?????? (??????????? ???????????????? ?????????)???10????,??????????????????,??

???????????“???”?

10?????????????????3??????????????3.1500??????????????????,???????????????????????82.84?????????,??????????????????????????????112.39??????????????4.5250?,??????110.41????

?????305.64?,????????????????????????????????????235.39???191.28?????????????????????????????????

2??10?,?????????????????????3??????????(?)????????(??)????????????(??)????????? ? ??

“?????,??????,???100%?????????,???”???????,?,???????,??

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

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

????:?????