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问题详情

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：2022-01-04 01:15 关键词：船舶动力装置海船船员考试

答案解析

B

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