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

2?????????

3???????

4???????100???

5?????app???

???????????9??2?? (???????????????? ???????)??,???????????“???????????????????????”“???????????????????????”“?????”????????????,???

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

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

???????????????????????????????????44???????????,?,????13???????????,?50???????????????,???????PPT?????????????????????????????????????????????????????????,?????????????????????????????????????????????????????????,??????????????

????,????????,???“??????????????”??????????,“LR20???”“????”?,“????????TFTLCD????????????????”????????????????????3??????????,“?????”????????????????????????????7??????????

“??,??????????,???????,?????????,??????‘??,???????????’?”?????,??,????????,?????????,??????(???)

???????:???