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

2??????V

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

4?????400????

5?????vx

??2??5?????? (?????? ?????)??????????????????????,?,??,????????????????????????“???????”???

??????????????? ??

?????????????5???,?????????????????????????8?????????????,???????396.93??,???11.5%;???????34.24????????????????,???12.3%?????,??131.9???,?13.5%;??????????????16.2???,?12.8%?

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???,???,????4??(??????)????40??????????

????,???????,???78%?(?????)

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