問題詳情
13.下列何者屬於呼吸器的氣流控制閥（flow control valve）？①proportional solenoid valves ②mushroom balloon valves ③stepper motors with valves④digital valves with on/off configurations
(A)①②③④
(B)僅②③④
(C)僅①③④
(D)僅①②④
參考答案
答案：C
難度：適中0.462687
統計：A(14),B(2),C(31),D(4),E(0)