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考生注意 :1.全卷共 2 4题 ,在 12 0分钟内完成 .2 .第 2 1、2 2、2 3、2 4题要求写出必要的文字说明、方程式和重要的演算步骤 .只写出最后答案 ,而未写出主要演算过程的 ,不能得分 .有数字计算的问题 ,答案中必须明确写出数值和单位 . 一、( 50分 )选择题 .本大题共 10小
Candidates note: 1. Full volume of 24 questions, completed in 120 minutes. 2. Questions 21, 22, 23, and 24 require the writing of necessary text descriptions, equations, and important calculation steps. Write the final answer, but not write the main calculation process, can not score. There are problems with numerical calculations, the answer must be clearly written in numerical values and units. One, (50 points) multiple-choice questions. The big questions a total of 10 small