阿摩線上測驗
49 Fire control consists of depriving a fire of fuel, ________ , heat and/or the chemical chain reaction that are necessary to sustain itself or re-kindle.
(A)oxygen
(B)liquid
(C)metal
(D)compound
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統計： A(1), B(0), C(0), D(0), E(0) #3459793
統計： A(1), B(0), C(0), D(0), E(0) #3459793
