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问题 单项选择题

某无吊车单层单跨库房，跨度为7m，无柱间支撑，房屋的静力计算方案为弹性方案，其中间榀排架里面如图1-7-7所示。柱截面尺寸400mm×600mm，采用MU10级单排孔混凝土小型空心砌块、Mb7．5级混合砂浆对孔砌筑，砌块的孔洞率为40％，采用Cb20灌孔混凝土灌孔，管控率为100％。砌体施工质量控制等级为B级。

假设屋架为刚性杆，其两端与柱铰接。在排架方向由风荷载产生的每榀柱顶水平集中力设计值R=3．5。kN；重力荷载作用下柱底反力设计值N=85kN。试问，柱受压承载力φfgA中的φ值，应与下列何项数值最为接近？提示：不考虑柱本身受到的风荷载。（）

A.0．29 

B.0．31 

C.0．35 

D.0．37

答案

参考答案：C

填空题

阅读下面短文，用括号内所给动词的适当形式填空（必要时可加助动词或情态动词）。

     It was three o'clock. Robert and his friends (1) ______ (play) hide-and-seek (捉迷藏) in a neighbor's

house. The game was very interesting and they (2) ______ (enjoy) it very much. Suddenly Robert had a

good idea. He smiled to himself. This time he found a good place (3) ______ (hide) in. No one could (4)

 ______ (find) him!

      There was an old fridge in the kitchen. The neighbor (5)______ (not use) it for a long time. Robert

opened the door and went in quietly. Of course, he (6) ______ (not find). But he was in great trouble!

His friends forgot him and they all went home. His mother came to (7) ______ (get) him home, but he was

lost. Everyone helped her (8) ______ (look) for Robert. But no one found him.

     The next morning, the neighbors (9)______ (hear) a knock in the kitchen. It (10)______ (seem) to come

from the old fridge. They opened it and found Robert there! He was dead.

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单项选择题

世界银行和亚洲银行等多边金融机构在选择咨询机构时，多采用（）的方式，把咨询机构的业绩和方案作为选择的主要标准。

A．公开市场招标

B．定价招标

C．竞争性招标

D．邀请招标
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