问题 单项选择题

要创建命名视图,系统会自动将其添加到图纸管理器的“视图列表”中,则需要在()?

A.模型空间

B.图纸空间

C.模型空间和图纸空间

D.以上皆不正确

答案

参考答案:B

问答题

       在中国近现代史上,中国社会性质发生过三次变化。请你指出1949年—1956年底中国社会性质发生的两次变化?简要说明每次变化的主要原因是什么?

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                              

                                                                                                                                                              

多项选择题