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

2?????

3????????

4???app????

5???410??????

??????:???????????????,???????????????????,????????????? ????????????,???????????????,????

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

?“????????????????”??,?????????????????,??60%??????????????????????,????

???,????????????,??????????????,???,?????????????????????????50%?

?:?????????????? 7?????????????????????

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

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

???????????????,???,?????????180???200????? ????????????????????,??????????????7???,?????????????????????????????????????????????????,????????????5000???????,????????

????:2.5???

????????,?????????????,2.5???????,???,???,?????????

???,????????????????????,????????????,?????????????????????60?????????80??,????????????120???????????,?????????300??

????????,????????????,???????,?????????????,??????????????“???????????????????”??????????,????????????????2.5??,???????????9????,???????????????4500??????????? ????????:?????????