49.下列何項氣體流速計(pneumotachometer)是利用氣體流經固定阻力之「阻力器
(resistor)」前後的壓力差來測得流速?
(A)Venturi pneumotachometer
(B)Vortex sensor pneumotachometer
(C)SensorMedics mass flow sensor
(D)Fleisch pneumotachometer
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統計: A(52), B(60), C(51), D(192), E(0) #1150608
統計: A(52), B(60), C(51), D(192), E(0) #1150608