离心泵按壳体剖分方式怎样分类?
参考答案:
①水平中开式泵:壳体在通过轴中心线的水平面上分开。
②分段式泵:壳体按与泵轴垂直的平面剖分。
---May I have a copy of Lu Xun’s short stories?
---Certainly. ___.
A.It is here
B.Here are you
C.Here you are
D.Here is
无法获得核定载质量的专项作业车和轮式专用机械车,怎么确定自重?