2. 外语
  3. Which of the following best explains what makes diamond a good engineering material? CVD is a process to produce______.

Which of the following best explains what makes diamond a good engineering material? CVD is a process to produce______.

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问题 Which of the following best explains what makes diamond a good engineering material?
CVD is a process to produce______.
选项 A、diamond coatings.
B、carbon vapor.
C、decorative gems.
D、large diamond crystals.
答案A
解析
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