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

2????????

3???app??????

4?????????

5??????????

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

??????????????,????????,???????????????????

??????????5????,?????????????3.7%,???1.4????????????????,?0.51%,???????????,???,??????????,??,???????????????,????????,5????????20.2%;??,??????????18.7%???????,“??????”????????????????,??????

????????????,???????????????????????,5??????????????,?????????????????????,??????10%,?????????????????????4.4??????????,????,3D????36.3%,????33.6%,???????17.3%,?????,??????????????

????,??????????????????5????????,??????8.6%?????????????????????????????,????????????????????????????????????????????,????????,??????????????????,???,????,??????????????????

??????????“??????????????,??????????????,????”?????????????5?????????????,???,?????????????,?????

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