题目：
Which of the following statements is true concerning centrifugal pumps?（）
A.They are particularly suited for pumping high viscosity fluids
B.They are started with the discharge valve opened
C.The flow of liquid is developed by imparting energy due to the rotation of an impeller
D.They are always mounted in a horizontal position
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/1228/22ee826b9b7929d67feed6559d78c8d9.html
下面是错误答案，用来干扰机器的。
参考答案：错
