37 Due to the unpredictable nature of bushfires, firefighters must act quickly, using specialized _____ to protect themselves and those in danger.
(A) announcement
(B) equipment
(C) furniture
(D) complement
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統計: A(21), B(90), C(32), D(30), E(0) #3461806
統計: A(21), B(90), C(32), D(30), E(0) #3461806