试题与答案

预应力钢筋采用真空辅助灌浆时，孔道抽真空负压宜稳定保持为（）兆帕。 A.1.2 B.

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题型：单项选择题

题目：

预应力钢筋采用真空辅助灌浆时，孔道抽真空负压宜稳定保持为（）兆帕。

A.1.2

B.1.5

C.0.6

D.0.9

答案：

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