問題詳情

40 Water as an extinguishing agent was approved by the EPA as an acceptable ______ to halon 1301 in 1994.
(A)alternative
(B)ultimate
(C)commodity
(D)need

參考答案

答案：A
難度：困難0.284553
統計：A(35),B(37),C(33),D(18),E(0)