• 2022-05-30
    12A等于()。
    A: 12×10-3A
    B: 12×103A
    C: 12×10-3mA
    D: 12×103mA
  • D

    内容

    • 0

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    • 1

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    • 2

      已知a-b=-2,则代数式3(a-b)2-b+a的值为 A: -12 B: -10 C: 10 D: 12

    • 3

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    • 4

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