???????????? ????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???????(?????) ???:?????????