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

2????????????

3?????

4?????

5??????

????6??????????17???? (?????????????????? ?)5????????????,????????

?????????????????????17????,5????????,??????????????70????,???

???????,??,5??,??0.7%,????????????????0.1???????????????????0.7%?0.8%,????0.2???????

?,???????1.2%,????????????0.1???????????????????????????????????1.0%,???????0.1????????????0.9%,???????????????????

??????????????????,5??????????????,??“???”??,??????70??,????;?????????????????????????????????,??,??

58????????????,???????????,6????(???????) ?????????????????????:?????????