????

??????????????????????????? 1??????k???????;?????????
2???????????????????
3???????????
4???????????????
6?????
7??15??3??10??10?10???10??1000???15?1?20??????


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

?-??== ??==== ??

????????

?
(?)
?
???
?x
?,????.
??
????
?

???
1.???2.??3.?


????
1??????????????????????????????
2?? ??????????????
3? ???????????????????
4? ????????
????????
?????????????????????????????
(1) ???????????????,?????????????????????????????????????????5??????;?????1?30???????????????
(2) ????1????????????????????????????????????????????
??...

1.
2.??
3.??
4.

????????
1?????????????????????????????????
2?????????????????????????????????
3???10:1??????????????????????????????????????
.
?? http://www.zhichuang88.com