- AOOAAnalysetoDealwiththeModelofAccount;Goodbackgroundofsoftwareengineering,familiarwiththeOOA/OOD/OOP.ThispaperusethetechnologyofOOAandDataBasetobuildasystemofWoundedMenClassifyingandDiagnosingbasedonthehardwareplatformofC/Sstructure.總之,在這個新的章...
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- 問題詳情:(2018·威海)圖為吊裝工具示意圖,物體M為重5000N的配重,槓桿AB的支點為O,OA∶OB=1∶2,每個滑輪重100N。當重為700N的工人用300N的力豎直向下勻速拉動繩子時,工人對地面的壓力為N,物體M對地面的壓力為N。(槓桿與繩的自重、滑輪組摩擦均不計) 【回答】4004500知識...
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