????

???Щ
1???10?2????У????  
2????ɡ?????  3????????23С??Ρ??????????÷?????????  
4??????Σ????裬???????????Щ?  
5????????????????  
6???ü??γм??????á  
7????????????????????Ч?????ɡ?  
8???糿????м??Ч???30??С???Ч?ɡ  
9???????京дV...

(1)?C?13gΣ?? (2)3%??510%?????Ч (3)???ζ??衣 (4)100g,?200?()??????Σ???н? (5)?20g?15????1015????Σ3050μЧ (6)????????硢????Ρ?25???????5?1????棬Ч

????????й??????????????

?????????????????????е???????м???е?л?????????????? ??? ν?????????????????????????????Ч????????
1????????

2??C??档桢??????

3?E?о??????...

???????
1?
??С????????????????????????
2?
???????????????1/4塢23????
????????С???塢??????
????????????12Ρ
3??
????????Ч?壬??????
????
÷??????????15???12Ρ
4?
?????????????????? C??Ч
5??
??????500?н????????С??????????????壬?沿к??
6. ??
????С?????????????沿?а??????????????????????
7?
?????顢?????
??ɡ
????1/4?...

??ип??Щ???????п????д???Щ??????й?????
??Щ??жΡ?á?з???顢???

??????????????????????10%?沿???????в??桢?????????????ú????????仯??

?????е??????????????????????????????????????????棬???????а?覵?????÷??77???????鷳???????????????????

??Щ???????????????Щ????????????λ???λ???β沿????Χ?????????沿?????????????Щ???...

??Щ??а,滹Щ巽!
?? ?λ???????????λ??????????1 ??С??????沿? 10 ??????ξ???кп????????Ч?沿?Ч????????????б?е??
?? ???????????壬?С?????????????г??????沿??Чи??????????????????????????á
?? ?????????棬С??档????????У?????? 20 ?????????ζ??????棬?麬и??????18??????????
?? ?????????????α??????С?????????????У??????10 20 ????...