第25题: [单项选择]Which of the following is CORRECT concerning Tom( ). A. He inherited some money from his parents. B. His uncle died several years ago. C. He will certainly invest some of his money. D. He wants some extra money available for when he retires. 参考答案:D
第26题: [单项选择]材料电导率随下列哪项的变化而变化?() A. 试样的合金成分 B. 试样的热处理 C. 试样的温度 D. 上述的三项 参考答案:D