???????

???
1???????
2???????2 cm2?
3?5%1%?
4???????50??
5?????
6??????????????
7???1 cm2??
8???50cm2??
9???30%??
10???34?????
11?????????
12???100 cm2?
13??????????
14????
15????????
16??0.5??0.8?
17??0.8?
18????????
19???1/3??
20?????
21?????????
22???????????
23??
24???
25???
26?...

????
1????????????????;??????????????????????
2????????????????
3??????
???
1???????????????Z????????Z?
2?????
3????
4?????????????????

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

???
1.????E?????4????????
2.??????????????????k??????M???????
3.???????????15???????

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

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

?5????????...

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

?????????????????????????????????????????...

???????????????????????23????5????3-6??????

???????5-10??5-10??????
??????????????????????????????????
?N??
??????

1???

??????????????2032?

2??

?????????????33-45?

3?

????23-36?

4??

???????????????????45-68?

???

1.???????????

2.????????????????

3.????????????

4.????????...