题目:
金属材料依次经过切离、挤裂、滑移(塑性变形)、挤压(弹性变形)等四个阶段而形成了切屑。()
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A解析:[听力原文]With regard to the term of the directors and chairmen, a four-year period is better from the perspective of the continuity and stability of a company’s policy though two-year is also reasonable.