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当钢中含碳量在0.8%以下时，随着含碳量降低，钢的强度和硬度提高，塑性和韧性下降。( )
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窗体布局窗口的主要功能是______。
Section A In this section, you will hear five short conversations. Each conversation will be read only once. At the end of each conversation, there will be a pause. During the pause, read the question with three choices marked A, B and C, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the centre. What does the man mean
Interview Two What is the first strange thing the interviewee found
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