问题 选择题

某一元醇A 10 g跟乙酸反应,生成乙酸某酯11.17 g, 反应后回收A 1.8 g,则A的相对分子质量接近于 [ ]

A.88

B.102

C.116

D.196

答案

答案:C

辨析题

据统计,我国目前城乡收入之比是3.1:1,西部地区12个省(区、市)面移占全国的28.8%而国内生产总值仅占全国平均水平的67%和东部地区的40%。同时,城市居民间也存在较大的收入差距。

辨析:存在收入差距就不是走共同富裕的道路,共同富裕的目标不一定能实现。

                                                                                                                                                              

                                                                                                                                                             

                                                                                                                                                            

                                                                                                                                                             

                                                                                                                                                             

问答题 案例分析题