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【判断题】
如果力系中各力的作用线都处在同一平面内,且各力的作用线不汇交于一点也不互相平行,这种力系称为平面任意力系。A.
正确
B.
错误
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【判断题】Jack Ma chose "Jack" as his English name because he thought it was a good name for people to remember.
A.
正确
B.
错误
【简答题】以钢筋混凝土简支T梁为例，简述静力加载试验过程的裂缝观测内容、一般步骤及注意事项。
【简答题】预应力混凝土简支梁，跨度18m，截面尺寸b×h=400mm×1200mm。简支梁上作用有恒载标准值g k =25kN/m，设计值g=31kN/m，活载标准值q k =15kN/m，设计值q=20kN/m。梁内配置有粘结低松弛高强钢丝束90- 5，镦头锚具，两端张拉，孔道采用预埋波纹管成型，预应力筋曲线布置。梁混凝土强度等级为C40，钢铰线f ptk =1860MPa，E p =195000MPa，...
【简答题】Harry Houdini was one of the greatest American entertainers in the theater this century. He was a man famous for his escapes from prison cells, from wooden boxes floating in rivers, from locked tanks ...
【简答题】It was a beautiful spring morning, and the sun was warm but not too hot, so Mr Green was surprised when he saw an old gentleman at the bus stop with a big, strong, black umbrella (伞) in his hand. Mr G...
【单选题】听力原文：Isn't the new discount store open for business yet? (A) Yes, it was drastically marked down. (B) We still have one hour to shop. (C) Not until next week. (15)
A.
B.
C.
【简答题】It was when I was attending high school that I first read Asimov’s stories. At the time, a few SF magazines began to introduce this author and translate a few pieces from his “Robot Series”. Of Asimov...
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