問題詳情
30. The type of unit can be found that their widest application fordealing with large volumes with medium-to-low heads and viscosities,and the condenser circulating pump be an ideal example.
(A) Gear pumps
(B) Reciprocating pumps
(C) Screw pumps
(D) Centrifugal pumps
參考答案
答案：D
難度：適中0.614458
統計：A(12),B(13),C(7),D(51),E(0)