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

admin

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

????????

1????????7????????????

2

3

4

5

6??1?????????? ????

?2???????? ?????

?3?????? ???? ????

7??1?????2??2? ????5?

8

9

10?A??? ???? ???B?

B??? ???? ???C??

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

?????????

?????

1????????????? 2????????????????

3?????????????????????????????????????????????

4?????????????????????????????? 5?????????????????�??�?�???�?�???�? 6????????????????????????????????????????

??????

1?????????????????????????????

2???????????????????

3?????????????????????

4???????????????????

5???????????

A?????600?????????????? B?????300?????????????? C?????900?????????????? D?????1000??????????????

6??????????????????????????????????????????????????????????????????

??????

1?????????ABC????l???A1B1C1?

?1??2??3?

2?????????ABC???O????????A2B2C2?

3?????????????ABC?????B??????????????900?????A1BC1?????BC1??????????A1BC1??????A2BC1?

??????

1????????????????????????????

?1??2?

2????A?B?C????????????AB?BC????????????????AE?CD??????????ABE?????????BDC????????????????????ABE????DBC????????????

3????????????????A???A�????????????

4?????????????????????

5.????????ABCD???????????m?n??????????ABCD????m?n??????A1B1C1D1????A2B2C2D2????????????????

?5??6?

6.??????ABC??????????AEF???????AE=AF?????ACDE????ABGF???????????ABGF????????????ACDE?????????????????????????????????????????????

7???????ABC???????D?E?F????AB?BC?CA???DE?EF?FD????ABC???????????????

?1???????DBE????FEC?????????ADF???????????????????????D?E?F?????AD?BC?CA?????

?2????DEF??????????ADF??????????

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


???????????????????????????
?????http://www.850500.com/news/3005.html
?????,??!