如图所示一个物体沿固定斜面匀速下�关于物体所受的力下列说法中正确的是 A.物体所受合力的方�沿斜面�下b.物体所受的重力和支持力大小 Template




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tomski如图所示一个物体沿固定斜面匀速下�关于物体所受的力下列说法中正确的是 a.物体所受合力的方�沿斜面�下b.物体所受的重力和支持力大小 coloring