试题与答案

火力发电厂主厂房中电缆夹层的外墙及隔墙应采用耐火极限不小于（）的不燃烧体。A、0.5

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题型：单项选择题

题目：

火力发电厂主厂房中电缆夹层的外墙及隔墙应采用耐火极限不小于（）的不燃烧体。

A、0.5h

B、0.75h

C、1h

D、1.5h

答案：

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