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单选题
我国现有海船规范规定锅炉安全阀开启压力()。
A
等于允许的最大工作压力
B
低于过热器安全阀开启压力
C
可大于实际允许工作压力5%,但不应超过锅炉设计压力
D
烟管锅炉不超出工作压力1.03倍,水管锅炉不超过1.05倍
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