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