问题 单项选择题

有台水泵的扬程不高,但流量很大,此泵一般为()。

A.混流泵

B.离心泵

C.轴流泵

D.螺旋泵

答案

参考答案:C

判断题

      上个世纪末,我国已达到小康水平,摆脱了贫穷落后,实现了初步繁荣富强,达到了中等发达国家水平。 

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

单项选择题