?? ????(?)??12?????????????28?????
????:1???????:?????????
2?????????????
3???????
4??????
5??????????
?????????????????????????????????12???28?? ????,12?????????????28??,«???????????????????????»????????????????????
?:??????????????????????????,??,????,??30????,???180???????90?,???????????????30??,????????????????180?????????????90???????????????????????,????????????????????????????,??????,?,????????
??????????2022????????«?????????????????????????????????»,?30??????????????????
???:?????????????????????????