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

2??????????

3?????VX

4?????

5??????????????

???????????????????10?????????????????10?????? (????)????,9???????????,9?????????????,????35.8%,???????????6.9?;??75%~100%?12.8%,????1.9??????????????????;??50%~75%?????21.8%,?????0.6????????;??????????????????50%????19.6%,????5.3??????????

9?????,?????????????,?????0.1??????0.3??????????????????,??0.1??????????,??????????????????????

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