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问题
单项选择题
轮廓算术平均偏差值是评定（）的参数。
A．公差
B．形状公差
C．位置公差
D．表面粗糙度
答案
参考答案：D
选择题
— How do you find my idea?
— _____.
A. By opening your notebook.
B. I don't like it a bit.
C. You showed it to me.
D. When I came in, I found it.
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问答题 简答题
怎样受理高压用电报装业务？
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