????:1?????:??????

2???????

3???????

4?????????

5??????????

??7??????????????15?????????????????? (?????????? ????)6?????????????????????????????15????????????,6??,70??,????????

??????,?????????????????????,6??????????????????,??????????????????0.5%,???????0.2?????0.7%,???????0.6%,????0.2?????????????

????,??????????????????,??0.4%,??0.8????,??????????????????????????,???0.2%?????0.5%????????0.9%,???????????????????0.1??????????????????????????0.9%,?????

?????????????????6???,??????????????????,??????????,???????????

????????????,6????????????????,70????????????????,???????4??????,??

??????????????????,?????????????????58??,?,???????,??????????????“????”????,6???????????????????????,??????????,?????????(?????????????) ?????:????????