单选题锅炉关闭蒸汽阀后完全燃烧,安全阀开启后,在规定时间内汽压应不超过()。A最大允许工作压力5%B设计压力的5%C最大允许工作压力10%D设计压力的10%
单选题
锅炉关闭蒸汽阀后完全燃烧,安全阀开启后,在规定时间内汽压应不超过()。
A
最大允许工作压力5%
B
设计压力的5%
C
最大允许工作压力10%
D
设计压力的10%
参考解析
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