位置公差可分为定向、定位和跳动公差三大类。( )
参考答案：对
―She didn’t come to school yesterday, ?
― , though she was not feeling well.[ ]
A. did she; Yes, she did
B. did she; No, she didn’t
C. didn’t she; Yes, she did
D. didn’t she; No, she didn’t
简述政书类丛书《十通》是研究我国封建社会政治、经济、文化等的工具书，属于政书。包括？
