問題詳情

33. Which type of valve should be installed whenever an undesired reversal of flow ispossible？
(A) Throttle valve
(B) Stop valve
(C) Check valve
(D) Relief valve

參考答案

答案：C
難度：簡單0.701493
統計：A(6),B(8),C(47),D(6),E(0)