阿摩線上測驗
14. What kind of machinery is not to convert mechanical energy into working fluids?
(A) pump
(B) compressor
(C) boiler
(D) blower
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統計： A(94), B(142), C(596), D(218), E(0) #3126415
統計： A(94), B(142), C(596), D(218), E(0) #3126415
