?1??25?????? ?????,25??,????5.7?????????????
?????????,??????????19????????49??5.7???,??21???????????????????6.4??,?7.7???,??????????43.9????????????????????????????????4??
?????“?????”,??
???1??????,?4.8????????,???6.8??????????,???????4????
???,???6???????????1??,???5.1?;???????20??21??????????,?5?,????????3.3??????????4.5??????????
??????,25???19???49?????5.1???????(????????????) ????:????
????????????????:?????
??????????????????
?????????????????????
??3?????!??????????
?????????12????????
?????????????????“??”
????????????????????
??:??????????
??????????????2000?????
??????????????????????
????????????????or??????
????????????????or??????
??:??????????
??2?????????:?????????
??????0.7%???0.8%
??????????????2000?????
??????0.7%???0.8%
???????4???????????????
??????????????
??:???????????????????
???????????????????
????????10?50????????
?????????????????????
???????????????????
??????????????3??????