51A common and relatively safe rescue breathing method used today by firefighters is known as_________.
(A) mouth-to-nose resuscitation
(B) mouth-to-mouth resuscitation
(C) mouth-to-mask ventilation
(D) mouth-to-mouth ventilation
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統計: A(4), B(6), C(16), D(4), E(0) #3007080
統計: A(4), B(6), C(16), D(4), E(0) #3007080