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

?????????2???????侲???????????????????

?????????????100%????????????????????100%????????????10??500???????100%??

????ˉ???????????10%???????????????????????????????????6????????????????????????10?γ??????????????????

1 - 90%??10?η? = 65.2%??

??R???????10%???????????????′?????10????????ɡ?

???????????????????????????100?????2%?????????????ˉ3?Σ?????????Σ?3??????????????????

1 - 98%????η? * 96%????η? * 94%?????η? = 35%

???????????????Σ??????????????3300??????????????ε?????ū200?????????????????????

1 - 96%????η? * 92%????η? * 88%?????η? = 59%

>>???????????????