4.下列何種機型的呼吸器是最早被研發出來的?
(A) Pulmotor ventilator
(B)“Iron lung” negative pressure ventilator
(C)Bird Mark 7 positive pressure ventilator
(D)Emerson Postoperative Ventilator(3-PV)

答案:登入後查看
統計: A(17), B(21), C(2), D(4), E(0) #1063220

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