阿摩線上測驗
33. Which pump is consisted of a vaned impeller mounted on a shaft that rotates within a
casing?
(A) Gear pump
(B) Centrifugal pump
(C) Injector
(D) Reciprocating pump
答案：登入後查看
統計： A(149), B(720), C(104), D(164), E(0) #3077170
統計： A(149), B(720), C(104), D(164), E(0) #3077170
