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

??

??:???????????,??????????,??????????????