第17题: [单项选择]某湿陷性黄土场地采用单液硅化法处理,场地尺寸为30m×30m,处理土层深度为7.0m,采用浓度为12%的水玻璃溶液掺2.5%的氯化钠,要求灌注时水玻璃溶液的相对密度为1.14,地基土天然孔隙比为1.0,填充系数为0.6,水玻璃出厂时比重为1.45,按《建筑地基处理技术规范》(JGJ79-2002)计算。加固该场地时需从工厂购进水玻璃()t。 A. 650 B. 660 C. 670 D. 680 参考答案:C
第25题: [单项选择]Questions 22 to 25 are based on the conversation you have just heard. A. Those who were at the age of 16. B. Those who failed the eleven plus exam. C. Those who did well in the eleven plus exam. D. Those who were not qualified for secondary school. 参考答案:C 答案解析:[听力原文]22-25 M: As a teacher, can you give us some idea on how the English school system works