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

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

??10?????6?? ??,???????????????,??????????,??????????????;6?7????,?,?????

?????

6????-7??????????,??,?????????????????????????????????????????????????????????????????????????3~6?,??????????????????????8?,?????????,??,?????????????????,?,????????????????????4?????,????????6~7??????

?,6?-8?,????????????????,??

????????

10??????6?????8???7?8??????????????????,????????????????????????????????????????????,?,????(50~80?)?????????????????????????4~6??

???????????(10?6???????8?-7??8?????????????????)

10?????????????7?8????????8??????8??,??????????,?,??????????????????????(50~70?)??????????????4~5???

??(10?????7?8????-8?8????????)

10??8????????8????????????9??8????,??????????????????????,?????,??(50~90???)?????????4~6??,?,?????????????6~7??

??????????(10??????8????8????-9??8?) ??:?????????