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