??

???
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...

????????? ???????????????????????? ??????????????????????????????????????????? ???????????????? ??????????23???????????????????? ???????????50????????????????????????? ???????40??????????????10???????????????????????????????????24 ?????????????????????????`???????????

1 ???
1???????1530min????30min?5min??
2?????????????
3????????????????
4?????????????????
5???????????????????????????
21%??? ?????
3? ??????????????C?B?
4??? ?????????????

?? 1.???????? 2.?? ????????????????????,0.4?0.5?0.25?????????????? 3.?? ????????????????????0.53%??????????? 4.? ??????????????????????????23?1520? 5.??? ??????????????????????????????? 6. ???????????????????????????????? 7.???????CEAD ??? 1.?? 0.5%??1?????????1030%??57%20%?????????????????23?45?1??...