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以下哪个约束中能确定约束力方向?()
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以下哪个约束中能确定约束力方向?()
A、固定端支座
B、光滑接触面
C、可动跤支座
D、固定铰支座
正确答案:B
Tag:
支座
接触面
约束力
时间:2025-12-08 09:47:20
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