题目内容
Old people may well be active in___________．
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根据甲、乙、丙3 个零件的已知数据，应选择（）为价值工程的对象。
Dyslexia
As many as 20% of all children in the United States suffer from some form. of the learning disotder2 called dyslexia．
Experts on dyslexia say that the problem is not a disease．They say that persons with dyslexia use information in a different way． One of the World ‘s great thinkers and scientists． Albert Einstein was dyslexic． Einstein said that he never thought in words the way that most people do． He said that he thought in pictures instead．The American inventor Thomas Edison was also dyslexic．Dyslexia first was recognized in Europe and the United States more than 80 years ago. Many years passed before
doctors discovered that persons with the disorder were not mentally slow or disabled. The doctors found that the brains of persons with dyslexia are different． In most people, the left side of the brain-he part that controls language is 1arger than the right side．In persons with dyslexia，the right side of the brain is bigger．Doctors are not sure what causes this difference． However，research has
shown that dyslexia is more common in males than in females，and it is found more often in persons who are left handed4． No one knows the cause of dyslexia，but some scientists believe that it may result from chemical changes in a baby’s body long before it is born．They are trying to and ways to teach persons with dyslexia． Dyslexic persons think differently and need special kinds of teaching
help． After they have solved their problems with language，they often show themselves to be especially intelligent or creative．
第 15 题 One out of five American children suffers from dyslexia．
根据下列条件，回答 49～54 题：
梁与柱的连接如图，钢材为Q235A·F(A3F)，采用B级螺栓连接，螺栓直径d=20mm，孔径d0=20.5mm。
第 49 题 当翼缘连接处的弯矩为946kN·m时，翼缘连接一侧螺栓所承受的轴力为（）。
下列技术分析的形态具有测算功能的是（）。
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