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