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【多选题】
下列关于非理想弹性变形说法正确的是（ ）。A.
非理想弹性是应力、应变不同时响应的弹性变形
B.
非理想弹性是与时间有关的弹性变形
C.
非理想弹性表现为应力应变不同步，应力和应变的关系不是单值关系
D.
非理想弹性变形是不可逆的
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举一反三
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A.
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B.
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C.
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D.
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E.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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