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

2????????????

3?????200??vx????

4??????????

5???????

???8???23???? (????)?????????????????23????1???7?????,??????????7??50%?

??,???????7???????,??31.0????,???????????14.0%??,??7.4???,???49.8%;??4.7????????????????,?????19.8%?

???1?7?,??1994???????,????????????91?????1??7????,??4158????????(??,????????????),??2.6%???2947??,???19.2%?(?)

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