题目内容

SZL20-2.5/400-H表示这是（)。

A. 工作压力为2.5MPa，出口水温度为400℃的热水锅炉
B. 工作压力为2.5MPa，额定功率为20MW的热水锅炉
C. 工作压力为2.5MPa，过热蒸汽温度为400℃的蒸汽锅炉
D. 工作压力为2.5MPa，饱和蒸汽温度为400℃的蒸汽锅炉

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