阿摩線上測驗
47. The primary goal of installing fire-rated doors and compartments is ________ , ensuring the blaze does not spread to other sections of the building.
(A) eliminating oxygen
(B) confining the fire
(C) accelerating ventilation
(D) igniting the fire
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統計： A(0), B(0), C(2), D(1), E(0) #3930760
統計： A(0), B(0), C(2), D(1), E(0) #3930760
