• 2022-06-06
    Among the following defects, ( ) belongs to the point defect.
    A: positive edge dislocation
    B: Frenkel defect
    C: negative edge dislocation
    D: screw dislocation
  • B

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    • 0

      ‌以下哪个是增强技术遵循的准则? ‌ A: Restricting and hindering dislocation motion renders a material harder and stronger. B: Restricting and hindering dislocation motion decreases the hardness of a material. C: Restricting and hindering dislocation motion are not related to the hardness of a material. D: Restricting and hindering dislocation motion are not related to the toughness of a material.

    • 1

      以下哪个是增强技术遵循的准则? A: Restricting and hindering dislocation motion renders a material harder and stronger. B: Restricting and hindering dislocation motion decreases the hardness of a material. C: Restricting and hindering dislocation motion are not related to the hardness of a material. D: Restricting and hindering dislocation motion are not related to the toughness of a material.

    • 2

      ‏点缺陷包含的类型 ‌ A: Vacancy B: Interstitial C: Dislocation D: Boundaries

    • 3

      点缺陷包含的类型 A: vacancy B: interstitial C: dislocation D: boundaries

    • 4

      在晶体中形成空位的同时又产生间隙原子,这样的缺陷称为______。() A: 肖特基缺陷(Schottky defect) B: 弗仑克尔缺陷(Frenkel defect) C: 间隙缺陷(interstitial defect)