Diesel engine waste heat boiler construction is usually of the fire-tube or（）<br>A:cyclone furnace boiler type<br>B:dry back boiler type<br>C:water-tube type<br>D:critical circulation boiler type

Diesel engine waste heat boiler construction is usually of the fire-tube or（）
A:cyclone furnace boiler type
B:dry back boiler type
C:water-tube type
D:critical circulation boiler type

出自：海船船员证

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