题目内容
、柔体约束特点是限制物体沿绳索伸长方向的运动，只能给物体提供拉力
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固定端约束通常有三个约束反力
滑动摩擦力的计算公式为F=μN
True or false:Relationships drive business in Japan. Without the right depth of relationships with the right people, it can be very difficult to achieve anything.
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