阿摩線上測驗
39 Properly fitted masks can help prevent life-threatening smoke______ during firefighting operations.
(A) ring
(B) grenade
(C) inhalation
(D) signal
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統計： A(24), B(53), C(210), D(32), E(0) #3256045
統計： A(24), B(53), C(210), D(32), E(0) #3256045
