举一反三
- 图示结构用位移法求解时，D1=FPl3/30EI。 ( )http://i...bf6de006cf264a75.jpg
- 图示结构EI=常数，用位移法求解时有一个基本未知量。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/11af4ef45f0a4d318675577be56ce35c.jpg
- 图示结构位移法基本方程的系数k11= __________EI/l 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/10ed0ec0d2db495ca28f5c24219d52be.jpg
- 图示结构用位移法计算时，若取结点A的转角为D1，k11为（）.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/357b993485ed4a43b10da7f490dfd9ac.jpg
- 图示结构用位移法求解可得:http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/f01f10dc5060409aa218af719c2a5450.png
内容
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图a所示结构用位移法求解时， M3图应如图b形状。 （ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/db8015bc571b4554bb5dead5723efc64.jpg
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图示结构各杆EI为常数，其结点位移基本未知量为_______.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/70a258d18e604274984e72c918f8663b.jpg
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图示两结构中MA相等，EI均为常数。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/f9f5a46d9aae4baea931a1acef7083ea.jpg
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图示结构用矩阵位法求解时，等效结点荷载列阵为：（ ）<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/8167bc9062764d2f9b61b691d95a902a.jpg"/> A: [-FPl/16 0 0] T B: [0 0 0]T C: [FP/2 - FP/2 0]T D: [- FP/2 FP/2 -FPl/16] T
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若x2+y2=1，则dy为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/d045b5f235a54083ab91e6f717cf00d8.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/74173c5355234874ab8cb9275865d5d6.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/bbfb37ba58fc4de0aa8688e0bb53cef5.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/f9a206c25e8c4ea1bd7b51519afd76b7.png" />