阿摩線上測驗
39. Which system is often used as the heating source for the low-pressure distilling plant?
(A) Jacket water system
(B) Lubricating oil system
(C) Refrigerating system
(D) Hydraulic system
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統計： A(224), B(57), C(50), D(32), E(0) #3457035
統計： A(224), B(57), C(50), D(32), E(0) #3457035
