第32题: [单项选择]矿料配合比例不变,增加沥青用量,混合料的饱和度将(, )。 A. 增加 B. 不变 C. 减小 D. 先增加后减小 参考答案:A 答案解析:[解析] 考察沥青混合料的技术指标——饱和度。沥青饱和度是指压实沥青混合料中的沥青体积填充矿料间隙体积的百分率。增加沥青用量,混合料的饱和度必然将增加。
第33题: [单项选择]A. He went mountain-climbing last year. B. He hasn’t traveled around the world yet. C. He always wants to climb that mountain. D. He definitely doesn’t want to climb that mountain. 参考答案:D 答案解析:[解析] W: Would you like to come mountain-climbing with us M: That’s the last thing in the