31. Diesel engines have relatively ________ at partial load than steam turbines.
(A)highoutput
(B)high efficiency
(C)low output
(D)low efficiency
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統計: A(0), B(7), C(1), D(2), E(0) #3479175
統計: A(0), B(7), C(1), D(2), E(0) #3479175