問題詳情

25. Which device can serve the purpose of preventing or controlling fluid leakage along a shaftwhere it passes through a wall or diaphragm that separates regions with different pressures?
(A) Bearing
(B) Seal
(C) Frame
(D) Housing

參考答案

答案:B
難度:簡單0.722222
統計:A(2),B(13),C(0),D(3),E(0)

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