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

2???????

3?????????

4??????

5?????????

????12???21????????????????? (??)???????????????????????,????,???,???2????????????????????(??,???????????)???????2000?????500???????,??????345?????????????????????????,5000??????????229???

???????????????? ??????????????

12??????????20?,?????????“??”?????????,????????????????“?????????????????????????”????,???????????????,???????????????,???????????????????

??????????,?????,????????,????????????,?,????50????,??????????????????????,????????????????,??????????????????????

????????????????? ??????

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

????????? ??????????????????

????????????,????,????????14?????????????16?????????????????19????????????112?,??98%;???????2?????,??????3???(????)

?????:??????????