下列影响扣件式钢管脚手架整体稳定性的因素中,属于主要影响因素的有(  )。

下列影响扣件式钢管脚手架整体稳定性的因素中,属于主要影响因素的有(  )。A.立杆的间距 B.立杆的接长方式 C.水平杆的步距 D.水平杆的接长方式 E.连墙件

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Those scientist spent three weeks in drafting the research

Those scientist spent three weeks in drafting the research proposal.A.clarifyin

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As a politician, he knows how to manipulate public opinion.

As a politician, he knows how to manipulate public opinion.A.influence B.expres

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We were attracted by the lure of quick money.

We were attracted by the lure of quick money.A.amount B.supply C.sum D.temptatio

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建筑幕墙防火构造要求正确的有(  )。

建筑幕墙防火构造要求正确的有(  )。A.防火层应采用厚度不小于1.0mm的镀锌钢板承托 B.应采用岩棉或矿棉不燃材料填充封堵,其厚度不应小于100mm C.承

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