单选题:在模板工程施工中,对大于(  )m的现浇钢筋混凝土梁、板,其模板应按设计要求起拱。

题目内容:
在模板工程施工中,对大于(  )m的现浇钢筋混凝土梁、板,其模板应按设计要求起拱。 A.3
B.4
C.5
D.6

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