問題詳情

29. What kind of pumps is used for pumping viscous liquids? And the pump is self-primingand capable of producing a high vacuum.
(A) Centrifugal pump
(B) Screw pump
(C) Volute pump
(D) Diffuser pump

參考答案

答案：B
難度：非常簡單1
統計：A(0),B(1),C(0),D(0),E(0)