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????:?????????:????????

????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????) ??:???????????????