小球从斜面滚下打到一个放在水平桌面的小木块上.如果要使小木块移动的距离变大所采取的方法不正确的是a使小球的质量变大高度不变b使小球在 Template




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tomski小球从斜面滚下打到一个放在水平桌面的小木块上.如果要使小木块移动的距离变大所采取的方法不正确的是a使小球的质量变大高度不变b使小球在 coloring