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學習快評丨qibao666888　　奶??(nai)類??(lei)不??(bu)但??(dan)富??(fu)含??(han)優(yōu)??(you)質(zhì)??(zhi)蛋??(dan)白??(bai)和??(he)鈣??(gai)??，還??(hai)能??(neng)補??(bu)鉀??(jia)??。??100毫??(hao)升??(sheng)牛??(niu)奶??(nai)含??(han)鉀??(jia)180毫??(hao)克??(ke)??，半??(ban)斤??(jin)奶??(nai)能??(neng)提??(ti)供?(gong)450毫??(hao)克??(ke)的??(de)鉀??(jia)??，相??(xiang)當??(dang)于?(yu)成??(cheng)年??(nian)人??(ren)每??(mei)日??(ri)參??(can)考?(kao)值??(zhi)的?(de)22.5%??。　　身??(shen)體??(ti)中??(zhong)的??(de)鉀??(jia)主??(zhu)要??(yao)來??(lai)源??(yuan)于??(yu)食??(shi)物??(wu)??，膳??(shan)食??(shi)中??(zhong)90%的??(de)鉀??(jia)通??(tong)過??(guo)腸??(chang)道??(dao)吸??(xi)收??(shou)入??(ru)血?(xue)??，并??(bing)主??(zhu)要?(yao)通??(tong)過??(guo)汗??(han)液??(ye)、尿??(niao)液??(ye)、消??(xiao)化??(hua)道??(dao)排??(pai)泄??(xie)??，而??(er)使??(shi)鉀??(jia)保??(bao)持??(chi)在??(zai)動??(dong)態(tài)?(tai)平??(ping)衡??(heng)中??(zhong)??。??。