??
???????????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?????????????????