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