The rate of heat transfer in a water-tube auxiliary boiler can be increased by ().

A . operating the boiler at less than normal water level B . installing fins on the firesides of water-tubes C . increasing the amount of excess air to the burners D . treating the boiler water with chemical oxygen scavenger

时间:2022-11-10 13:57:30 所属题库:船舶动力装置题库

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