如图所示在粗糙水平面上放一个三角形木块a有一�块b沿木块斜面匀速下�则下列说法中正确的是 A.a保持静止且没有相对于水平面运动的 Template




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tomski如图所示在粗糙水平面上放一个三角形木块a有一�块b沿木块斜面匀速下�则下列说法中正确的是 a.a保持静止且没有相对于水平面运动的 coloring