31.為提高柴油主機的餘熱回收,可在排煙管中安裝什麼裝置?
(A)空氣預熱器(Air Preheater)
(B)廢氣節熱器(Exhaust Gas Economizer)
(C)過熱器(Superheater)
(D)降熱器(Desuperheater)
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統計: A(4), B(91), C(3), D(2), E(0) #1205122
統計: A(4), B(91), C(3), D(2), E(0) #1205122