問題詳情

46 To avoid the pumps being shut down due to malfunction in the control system, they can only be switchedoff_____ by a firefighter.
(A) momentarily
(B)severely
(C)voluntarily
(D)manually

參考答案

答案：D
難度：適中0.583333
統計：A(1),B(2),C(2),D(7),E(0)