問題詳情
17. The required number of dual nozzles are on board, and each fire hose together with any neseccary fittings and tools kept ready for use in a conspicuous position near water service hydrants or connections.
(A) usage
(B) alternatives
(C) selection
(D) purpose
參考答案
答案：D
難度：簡單0.833333
統計：A(3),B(7),C(5),D(105),E(0)