【单选题】【消耗次数：1】
静定结构在（）时，只产生位移，不产生变形和内力。
①
温度变化
②
支座移动
③
荷载作用
④
动力作用
参考答案：
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相关题目
【单选题】
超静定结构在温度变化和支座移动作用下的内力和位移计算中，各杆的刚度应为（）。
①
均用相对值
②
均须用绝对值
③
内力计算用相对值，位移计算用绝对值
④
内力计算用绝对值，位移计算用相对值
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