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发表于:2022-08-05
问题详情:以点A(-3,0),B(0,-3),C(,)为顶点的三角形与圆x2+y2=R2(R>0)没有公共点,则圆半径R的取值范围是________.【回答】)知识点:圆锥曲线与方程题型:填空题...
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发表于:2024-01-01
1、DynamicModellingandSimulationofanR2RFCCUReactor-regeneratorSection;2、ThisalsoapplieswithR2RDAC'stooasthesehaveevenworseproblemsduetotheveryslowswitchingspeed.3、Thec...
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发表于:2020-10-25
问题详情:如图为皮带传动示意图,假设皮带没有打滑,R=2r,则()A.ωA=ωB B.ωA:ωB=1:2C.ωA:ωB=2:1D.无法计算【回答】解:A、B为轮边缘上的两个点,并且他们通过同一皮带连接,在传动过程中皮带不打...