问题
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下列程序段中哪一组将a,b变量值交换?()(A) a=a-bb=a+ba=a-b(B) b=a+ba=a-bb=a-b(C) a=a+bb=a-ba=
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A.worldlyB.hardeningC.worthyD.earthen
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He was a myth that______out of desperation and poverty and despair.A.has been createdB.has
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根据算符▽的微分性与矢量性,推导下列公式: ▽(A·B)=B×(▽×A)+(B·▽)A+A×(▽×B)+(A·▽)B A×(▽×A)=▽A2-(A·▽)A
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为下列正规式构造最简的DFA: (1)(a|b)*a(a|b) (2)(a|b)*a(a|b)(a|b) (3)(a|b)*a(
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He broke the window in his 【anger】A.despair B.emb