問題詳情

52 Standpipe systems have been installed in health care facilities for many years to provide______ valves inenclosed stairs and throughout selected occupied rooms and corridors.
(A)hose
(B)duct
(C)coil
(D)water

參考答案

答案:A
難度:非常困難0.192308
統計:A(5),B(5),C(6),D(7),E(0)

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