问题 单项选择题

不等臂天平通常指()天平

A.托盘

B.半自动电光

C.单盘

D.机械

答案

参考答案:C

简答题

怎样贯彻实施科教兴国战略或人才强国战略?(我国应如何提高自主创新能力,建设创新型国家?) 

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                              

                                                                                                                                                               

                                                                                                                                                               

单项选择题