![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
比转数一单级单吸泵,流量Q=45m3/h,扬程H=33.5m,转速n=2900r/min,比转数为()。
A.106
B.90
C.80
D.60
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.106
B.90
C.80
D.60
A.Q=Q1=Q2
B.Q=Q1+Q2
C.H=H1=H2
D.以上都不符合
A.入口管径400mm,多级油泵,总扬程250m,2级泵
B.扬程400m,多级油泵,流量250m3/h,2级泵
C.流量400m3/h,多级油泵,总扬程250m,2级泵
D.入口管径400mm,多级油泵,单级扬程250m,2级泵
A.单级悬臂式离心水泵
B.分段式多级离心水泵
C.中开式多级离心泵
D.自吸离心泵