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Invented for use in short wavelength radar during WWII, the cavity magnetron, which was able to produce electromagnetic waves at a lower frequency than had previously been possible, was the basis for the development of the common microwave oven.

  • A

    Invented for use in short wavelength radar during WWII, the cavity magnetron, which was able to produce electromagnetic waves at a lower frequency than had previously been possible,

    分析该选项
  • B

    Invented for use in short wavelength radar during WWII, having the ability to produce electromagnetic waves at a lower frequency than had previously been possible, the cavity magnetron

    分析该选项
  • C

    A technology invented for use in short wavelength radar during WWII, called the cavity magnetron, which was able to produce electromagnetic waves at a lower frequency than had previously been possible,

    分析该选项
  • D

    A technology invented for use in short wavelength radar during WWII, called the cavity magnetron, which had the ability to produce electromagnetic waves at a lower frequency than had previously been possible,

    分析该选项
  • E

    A technology invented for use in short wavelength radar during WWII and had the ability to produce electromagnetic waves at a lower frequency than had previously been possible, called the cavity magnetron,

    分析该选项
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正确答案: A

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