题目内容

钢的含碳量越高，其强度和塑性也越高。

A. 对
B. 错

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wc=4.3%的钢在1148℃发生共晶转变形成莱氏体。

A. 对
B. 错

碳在奥氏体中的溶解度随温度的升高而增加。

A. 对
B. 错

A. Choose the proper response to each of the statements and questions you hear. The statements and questions will be spoken twice.[音频]Q1: Thank you.

A. Me too.
B. Not at all.
C. Thank you.
D. Very much.

Q2: Good to see you.

And you?
B. Good to see you, too.
C. Thank you.
D. Yes, please.