如图所示物体在木板小车上随车一起在水平面上�左做匀速直线运动不计空气阻力则对物体受力分析正确的是 A.只受重力b.受重力支持力和 Template




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tomski如图所示物体在木板小车上随车一起在水平面上�左做匀速直线运动不计空气阻力则对物体受力分析正确的是 a.只受重力b.受重力支持力和 coloring