第5章（第3页）

请退出浏览器阅读模式，否则将导致章节内容缺失及无法阅读下一章。

?ˉ1?o???????è????aè|??±?????3?????2????????????????

???ˉ??￥??????

?????????èˉ′èˉ?????′???±???èoo??????è§??o????

????¤??????????????????°é??????±?èoo??¨?o????èo????????????????èo???????????o???????è?°???é?·??￥?????????

??????è§???????è????°??1?o???￡?°????

a???o?é?|??????è|?????1??????????????￥1?1?é?′?2?????1???￠???a??

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

??′?2????????o???????è????ˉ??§??-è￡???????

è??????2???3??°?????ˉ???é??????±?????o??¤???????è??????o-?§?????o???o??????

??￥?????￥???è???o??¤????

??¨é??????±????????????′?3?????????????????????3?3??￥?????????￠?¤???°??????????o-?§??2??????o??°????????????

??a??ˉ???????1?é?′?¤§?¤???°???????¤?????·2?????a????2?é?????

?|???????????????°???????¤????

??????7??1????????¨?1|??????????o???¤?°?é???1|???

????°???????????oo???

????°????é??????±????

????°?é???1|è￡???￥????°????é?¨?¤??°±???èμ·?o?é?¨é??????￡°é?3???

??????é?¨???é??????±????????o-?§??o2??μ?????·?-????é?′?????￥???????????????

é???????|è?§???é??????±??°??¤′?????¨?￥1???è??é￠????è???￡°??????a???o-?§???????è|?èμ°a?|a?|????????￥a?|a?|a??

??????????o-?§????????????????

è?????????????????è?¨?????o??￥????-¤??????é??????±???′é????????????ooa??a??

????????ˉ???????o?é?|???????-????è????ˉ?￥3???????o-?§???????

请退出浏览器阅读模式，否则将导致章节内容缺失及无法阅读下一章。