????:1?????????vx:??100??

2?????

3???????????

4?????

5?????????

??1??20????????????????????????? (????????????? ????????????????????????????)???A??20?(?)?????????,???????????,?,?,????“???????????????”?

??,????????3244??,?????0.08%;????????10256?,??????0.94%;?????????????2104???????,?????????????????????1.81%?

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????,?????????????????????????????,?????????????????2.4%?2.31%??1.83%,???????????,?????????????????????????????????????10%?(?????) ????????????????:????