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

2???????

3??????????

4???????

5???????

?6????6? ?,????,?????????????????????????????????????????????,?????,??????????????????????;????????,????????????????????????????

???

?8?6?????,??????????????????????????????????,?????????????????????;??????????????????????????????,????????

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6-7?,???????????????????????????,??????????????????,??????????????????,??????????????

?????,7-10?,????????????,???????

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6?????6??8????7????8??,???????????????????????????????????????????????????????????????,??????????,??????????????????(50~90?????)?????????????????4~6????(??1)?

?1 ?????(6??????6??????8?????????????????-7???????8???????????????????)

6?7?????????08???8??08?????????,???????????????????????????????????????????????????,????????,???????(50~70?)(????2)?

??????????2 ??(6??????????7?8??????????-8??????????8????)

6?8?????????8?9??8??,??????????????????????,????,?????(50~90????????????????)(????????????????????3)?

??3 ???????(6??????8??8?-9??8??) ???:???????