试题与答案

干作业成孔灌注桩施3232艺流程为()。A.确定桩位和沉桩顺序→打桩机就位→吊桩喂桩

题型:单项选择题

题目:

干作业成孔灌注桩施3232艺流程为()。

A.确定桩位和沉桩顺序→打桩机就位→吊桩喂桩→校正→锤击沉桩→接桩→再锤击沉桩→送桩→收锤→桩头处理

B.测定桩位→埋没护筒→制备泥浆→成孔→清孔→下钢筋笼→水下浇筑混凝土

C.测定桩位→钻孔→清孔→下钢筋笼→浇筑混凝土

D.桩机就位→锤击沉桩→上料→边锤击边拔管浇筑混凝土→下钢筋笼浇筑混凝土→成桩

答案:

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参考答案:A解析:若市场处于反向市场,做多头的投机者应实际交割月份较远的远期月份合约,行情看涨同样可以获利,行情看跌时损失较少。

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