???? ?5.6????????????

?1?30?? ?????????????,30?,???????5.6??????????,???????????21???6.4??

??????????????????,30???10????????????11??,????????5.6????,?????10????,?5??????,?????????????10??????4????,?????3.2??????????4.3?,???

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?,30????????10?11??5.2??(?) ?????????????:???????????