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

2?????????

3???app?????????

4?????vx

5??????

???????2???10??(??? ???)???“????”??????????

????,????????????????????2??????12???????????????????????????????????????0.01%?0.1%?0.1%?0.2%?0.3%,??9-30????????

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????????2??????????????15??????????????????????0.15%?0.25%?0.4%?0.6%?1%??20-58????

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???????????,???????????2?10????????,??????????????650???700?????(????)

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