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【单选题】
图示为凸轮机构从动件位移与时间变化线图,该运动规律是 运动规律。
A.
等速;
B.
等加速等减速;
C.
正弦加速度;
D.
余弦加速度;
E.
正弦加速度-正弦减速度
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A.
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B.
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E.
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A.
新总统承认共和
B.
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C.
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A.
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B.
5日
C.
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D.
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E.
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F.
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G.
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H.
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I.
阿司匹林
J.
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