??????????L???????????


???????????????????N???????????????????????????
(1)?????????
(2)??????????????
(3)???????????????
(4)????????????A?????
???????????????????????????????

????
??????????????????????????????????????????????????????????????????????????????????????????????????
(1)
?? ?????????????30g10g10g?10g10g10g10g10g10g??1
? ?????????????????20g10g??30g 30g15g30g??60g15g15g??1
(2)
??????????
??????60g?15g?2g???
5%???????
(3)??(???)
?60g80g20g?
?(???)60g??
?10g?15g

...