7.如图所示为一高山的等高线图某登山运动�从a点到达b点时下列说法正确的是 A运动�的体重变大 b运动�的重力势能减小 c运动�烧水 Template




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tomski7.如图所示为一高山的等高线图某登山运动�从a点到达b点时下列说法正确的是 a运动�的体重变大 b运动�的重力势能减小 coloring