? ????5.6????????????

??????1????????????30????? ????,30????????,?5.6?????,????????21????????????6.4???????

??????????????????????,30??????????10??11???????,???5.6???,?10??????????,??????????5????,????????10?4????????????,??3.2?4.3?,???????????

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

?,30???????????10?????11?5.2??(???) ??????????????:???