阿摩線上測驗
57 Fire ________ systems have a proven record for controlling and extinguishing unwanted fires. Many fire officials recommend that every building, including residences, have fire sprinkler systems.
(A)assistance
(B)suppression
(C)alert
(D)risk
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統計： A(1), B(0), C(0), D(0), E(0) #3459801
統計： A(1), B(0), C(0), D(0), E(0) #3459801
