問題詳情

22. What kind of pumps is used for pumping viscous liquids? And the pump is self-primingand capable of producing a high vacuum.
(A) G.S. pump
(B) Centrifugal pump
(C) Fire pump
(D) Gear pump

參考答案

答案：D
難度：適中0.4
書單：沒有書單，新增