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

2??????

3???app???

4?????

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

????????????9?5??????????? ????????????????5??????????????????,???,????,???

???,???,??50??,?,????????????????????7????,??????????????????????????1200????????,?????27?????????????42?70????????????????80?,?????40??2?????10???7???????42?????

??????????????????????????????????????,?????????70%??,????????????13?????????????

????????????????5???????????,?????????12??????????????????????????????????????????????????(????)??????,?8100???,?????????????????????????????? ???????????:??????????????