13. 由圖2、圖3所示,汽輪機之輸出功為何?
(A)h2-h1
(B)h1-h4
(C)h4-h1
(D)h1-h3
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統計: A(79), B(26), C(26), D(10), E(0) #2711350
統計: A(79), B(26), C(26), D(10), E(0) #2711350