问题 单项选择题

当稀油站的两台油泵工作方式选择为互为备用时,如果两台油泵都因电气、机械故障使工作油压降低到()Mpa后,发出停风机的跳闸命令。

A.0.06Mpa

B.0.07Mpa

C.0.08Mpa

D.0.09Mpa

答案

参考答案:B

问答题

请你谈一谈戊戌变法失败的原因是什么?

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

单项选择题