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