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

2?????????????

3?????????

4?????

5????????

???6??15?????? ??????“pptv online”15???????????,?“???????,??,??????????????????”??????????

????????,??????1???????????5?????????,?????????1500???,???????1.1?(???????????2200?)?????,?????2170?????????????????,????????????3.5????(????????7000?)?

?????????,?????,???????,?????,????;????,????,??????????????????;????????????,???????????????????????????

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

??:??,??????,?????,???????????????;????????????“????”:????????????,???????;????:?,????,???????????????????????,???????(??) ????????:?????