桁架结构全由三角形组成,接头均为旋转接头,称为铰接。大跨度建筑物的屋顶、大型桥等,常采用桁架结构。以下桥梁中采用桁架结构的是()A.AB.B

桁架结构全由三角形组成,接头均为旋转接头,称为铰接。大跨度建筑物的屋顶、大型桥等,常采用桁架结构。以下桥梁中采用桁架结构的是()A.AB.BC.CD.D

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_______you are leaving tomorrow, we can eat dinner together tonight.A Since B Wh

_______you are leaving tomorrow, we can eat dinner together tonight.A Since B Wh

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It is said that she will go abroad_____this month.A some time B some times C som

It is said that she will go abroad_____this month.A some time B some times C som

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Two days is not enough for him to finish the work. He need ________day.A other B

Two days is not enough for him to finish the work. He need ________day.A other B

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Therefore,other things______equal, the number of workers that employers want ...

Therefore,other things______equal, the number of workers that employers want ...

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