問題詳情

33. Which of the following carries the heated water or air to run throughout the building?
(A) Trappers.
(B) Tanks.
(C) Pipes.
(D) Greenhouses.

參考答案

答案:C
難度:適中0.591837
統計:A(31),B(62),C(232),D(67),E(0)

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