题目内容（请给出正确答案）

[主观题]

Vickers hardness numbers are a measure of the size of the penetration made by ______ with different

loads.

A) 10-mmsteelball

B) tungsten carbide sphere

C) diamond pyramid indentor

D) diamond cone indentor

提问人：网友anonymity 发布时间：2022-01-06

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