患者男 46 岁，肠梗阻术后禁食4 天，乏力，恶心，心悸，心电图示T 波低平，有 U波。拟诊为低钾血，根本原因是
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We_____knowledgefromourfamilies,schools,jobs,andthemassmedia
Theteacherrequiredthatallerrorsshouldbe_______eliminatedbeforethestudentsturnintheirtermpaper
一热机的循环效率为15%，在一次循环中从外界吸热2000J，则此热机在一次循环中所做的净功为______J.
InAugust1977,asatellitetogatherdataaboutthe10millionblackholeswhicharethoughttobeintheMilkyWay.
I_____him150dollarsandmustpayhimbacktomorrow.
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