问题 单项选择题

《煤矿安全规程》规定,局部通风机及其开关地点附近10m以内风流中,瓦斯浓度不超过()时,方可人工开启局部通风机

A.0.5%

B.1.0%

C.1.5%

D.2.0%

答案

参考答案:A

材料分析题

改革开放以来,我国社会生产资料所有制的比重变化情况如下:

(1)此表格反映了我国现阶段的基本经济制度是什么?

                                                                                                                                                              

(2)与这一基本经济制度相适应,我国现阶段实行的分配制度是什么?

                                                                                                                                                             

(3)实现这些富有活力的经济制度有什么意义??

                                                                                                                                                              

                                                                                                                                                             

单项选择题 A1/A2型题