??

???
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?...

???????????????????v??????????
?????????
1.??
?
?? ??????????????????????????????
?? 25?????56
?? 100?10?????510
????
???? 1.53%???46???????
12.5%??46?
?? ??2???????g?????
?
??? ????????????
? ????????
2.
???
???? ??????????????????????1????????1?????2?????????????????
??????????56...

?08????????????????

? ? ???? ?? ?????????????????162????175?50?? ????168?185?54?? ??????158????48?? ???158?45?? ???? ? ???????????????? ??????????? ???????????????? ? ???????? ???????? ??????????????? ??2?????????7??4?????? ?????????????????????? ???????? ? ?????? ? ??????????????0.5??????? ??...

?????????????????????????????6???
1.???77.1%???????????????????
2. ??????????????????????
3. ??????????
4. ????????????????????????????????70%??
5. ???????????????????????????????
6. ? ?????????????30%????
?????????????????????????????????????

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

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