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当前学科:催化重整装置(高级工)
题目:
单选
新建加热炉烘炉前蒸汽暖炉时,炉膛顶部的温度应保持在()。
A . A、130-150℃
B . B、250-320℃
C . C、480-500℃
D . D、800℃
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