第21题: [单项选择]轴承与箱体配合应选用()。 A. 基轴制 B. 基孔制 C. 基轴制或基孔制 D. 非基准制 参考答案:C
第22题: [单项选择]A. There are more people at next stop. B. Some people will get off at next stop. C. Nobody is in the bus. D. Less people will get off. 参考答案:B 答案解析:[解析] W:This bus is so crowded that I can’t breathe. M:Be patient,the bus will empty out quite