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)

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