试题与答案

最大轧制速度高于()的轧机为高速轧机。A.20m/s B.30m/s C.40m/s

题型:单项选择题

题目:

最大轧制速度高于()的轧机为高速轧机。

A.20m/s

B.30m/s

C.40m/s

D.50m/s

答案:

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参考答案:体育教学工作计划有以下4种:(1)学年体育教学工作计划; (2)学期体育教学工作计划;(3)单元教学计划。(4)课时计划(教案)。 课时计划是教师根据学期体育教学进度和单项教学计划并结合...

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题型:单项选择题

某6层框架结构,如图所示。抗震设防烈度为8度,设计基本地震加速度为0.20g,设计地震分组为第二组,场地类别为Ⅲ类,集中在屋盖和楼盖处的重力荷载代表值为G6=4800kN,G2~5=6000kN,G1=7000kN,采用底部剪力法计算。

提示:按《建筑抗震设计规范》(GB 50011—2010)计算。

假定结构的基本自振周期T1=0.7s,结构阻尼比ζ=0.05。试问,结构总水平地震作用标准值FEk(kN),与下列何项数值最为接近()

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