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

???
??5?3?3?30?
?????30?????
???12
???????????????????????????
??????
??????????????

2???:?
??60?30?
????????
?????
??????????????????????????????
????????????
???????????

3????:
??3060??1015?
????
????????
???????????????????????????
????????????
???????????

4??? ?
???30?...

M???????????

?????}?????????????????????????????????????????

???

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

??1??

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

???

??

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

??2?

?????????

???

??

??????

??3??

??????????

???

??

??30????????????

??4?

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

??

??

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

??5??

?...

????
1.???????????????????
2.?k?????????
3.?????????????
5.????????????????
6.?1-2?
7.????????????
8. ????????
10.?????????!????????
??????????????
????
?. ????????????????????????

. ??????????????????????????????????
?????
??????????????!
??? ?? ????
?????
????
?????

????????????????????? ?????????????????? 1?????2-3?20?????????? 2?s??1?t?1???? ???????????????????? 1????3?15??????? 2???3?15-30??????????? ???????????n??????????? 1?????6????????? 2?s??1-2?6????????????? ??????????????????? 1?s???1???????? 2??????2-3?10??????? ]????????????????? 1???2-3?10-20??????...

,?,???.??,,?,??,??


?,?,
???????
???
?????????????????????