40. In a steam turbine engine, what is the energy required to spin the turbine backwards in
the atmosphere of exhaust steam.
(A) kinetic energy
(B) blade thermal energy
(C) pressure loss
(D) astern turbine loss
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統計: A(204), B(168), C(245), D(624), E(0) #2440126
統計: A(204), B(168), C(245), D(624), E(0) #2440126