11.Which type of compressor is consisted of an impeller with an axial inlet and essentially radial discharge, with passages formed by approximately radial vanes?
(A)Rotary axial compressor
(B)Multi-stage turbo-vane compressor
(C)Axial flow compressor
(D)Centrifugal compressor

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統計： A(55), B(44), C(29), D(177), E(0) #600729