??
???????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??(??) ??:??????
?????????
????????????????? ?5.6?????????????????