50.下列四種氧氣分析儀中,何種是利用氧氣冷卻電阻原理的分析儀?
(A)極譜分析(polarographic)
(B)直流電池(galvanic cell)
(C)順磁性(paramagnetic oxygen analyzer)
(D)惠斯登電橋(Wheatstone bridge analyzer)
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統計: A(28), B(24), C(22), D(125), E(0) #1046009
統計: A(28), B(24), C(22), D(125), E(0) #1046009