?? ????

???? ?

???b????

?

1??

(1)???B6?10-20?3??B2?5-10??2???B?2??2????25?3???25??3??????025??4???80??2????????5?3-4?

(2)????3%?01%???(6?????)?15-20??3??30-50%?????2-5%????????????????????????2

2??

(1)?50-100,??2??15-20?????6??2??

(2)100?2000??20??????3???

3??

??????????

4.?

?????????

???3-5???...

??
????????
?????????????
?????
?????
??????????A???????????????????????????T??????????????????????
?????CB1???????????????????18.8%??356??66.3%?A515????E41.7??B11.32??B21.09??C159?12.1?1037?28.1?13.4?24.9??2.7??469?1412?3486?2959??38???19.6?
1?????????????????
2??
(1)?B??B6 B2 B1
(2)???? ...

??????
?????????????????5-8??????B2B6????????

??(??)???????????R??????????????????
??
1.?????????R??????
2.???????????????????
3.???????
4.????1???????????

1.???????????????
2.????????p??
3.????

?
??? 1.?B2B6??B? 2.???? 3.??????????
?????????
??
1.???B????1-2???
2.???????????
3.?????
????????...

???????1??????????2??????????3%??
??????????????????
??????

???????????????????????????????????????????????????????3050????????????????????????

?????????????????
 
 
??????????????????????????????????;?????????????A?B????A??????????????????????;?B??????????;??????????????????
???????????????????????
??????o????????????????
????????????????????????????????????????+?Q  Q : 12 07 8 79 392
 
 
 
 
?.} ~ ...