28.下列何種氣體流量計是利用壓力變化得到流量數值？
(A)Flow restrictor
(B)Bourdon gauge regulator
(C)Pressure compensated Thorpe tube
(D)Pressure uncompensated Thorpe tube

答案：登入後查看
統計： A(56), B(311), C(70), D(12), E(0) #1742597