????:1???app????????:???????

2??????

3?????????

4????????

5????????????????

?????7???31??? (?????????? ????)???????????31??????????,???,????????,??????4.9???,??????????????5.6%?

????????????,??????,???????,?????????????,???,???,?,????????????????????????????,??0.6?????,???????????

????????????,??16.9%?????????????????????????????

????????????,????????????,??????????????????????????,???????????????????????????????????,?????????,?????????????????,??????????????????(???) ???????????:????