??

???????,??:
1.??,???????
2.?,?????
3.???,^
4.???k????
5.???8???????


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

1)??
????100g??????510g??????????
?50g???50100ml??????????
?1520g???????50100g??????
???30g????10????100g??????????????
????20??????30g???2?1??15g?????
????60100g??
??10g?2250g??????????????3????
??????4560g(??100120g)100150g??????

2)
??????30g??12??
???15g?6g?2?1??
????30g?2?1??
?30g?15g?60g??1??
?????????????10???21???

3)?
??????????????????????????230????1?? ...