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佳木斯大学语言治疗学
计算刚架时,位移法的基本结构是( )
·超静定铰结体系
·单跨静定梁的集合体
·单跨超静定梁的集合体
·静定刚架
图示梁在移动荷载作用下,使截面K产生最大弯矩的最不利荷载位置是( )
·
·
·
·
图示结构AB杆的固端弯矩
是( )
·-6kN.m
·6kN.m
·1.5kN.m
·-1.5kN.m
图示直杆的力矩传递系数C=( )
·0
·-1
·1
·1/2
将三刚片组成无多余约束的几何不变体系,必要的约束数目是几个( )。
·2
·4
·6
·8
对图示体系进行几何组成分析,为( )体系。<img src="data:image/png;base64,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" >
·无多余约束的几何不变体系
·有多余约束的几何不变体系
·几何可变体系
·几何瞬变体系
图示结构中有( )根零杆。<img src="data:image/png;base64,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" >
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图示结构弯矩图形状正确的是( )。
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
图示结构的超静定次数是( )次。<img src="data:image/png;base64,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" >
·3
·4
·5
·6
图示结构用位移法求解时独立的结点位移是( )个角位移,( )个线位移。<img src="data:image/png;base64,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" >
·2,1
·2,2
·3,2
·3,3
位移法解图示结构内力时,取结点1的转角作为Z1,则主系数r11的值为( )。<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAANsAAAB1CAYAAADHlZTeAAAIjElEQVR4nO3dWUhUXxwH8J9Lli0iWRSFERSERFEQFiWI1YMPFQQ9SFg9CNVDC0IpiRFK24O20YYR1YNGvbUQRJRaQRQSkdEm9lDZappGhZX293fyzn9mnBmvc++cc67n+4HhztyZnJ823znnnnOXuL+9CABiLl51AQCmQNgAJEHYACQxOmx//vxRXQIYxNiwnT59mpKSkujBgweqSwFDGBu2goIC2rVrF82fP5/u3bsn1sXFxVFVVZXiymCoMjZsjMN2584dWrRoEVVUVIiwPXz4UHVZQ1JRUZHqEpQzOmwsKyuLamtrafv27YQpR/dxNz0+Pl58mZnO+LCx7Oxsam9vFy1bQkKC6nKGlMzMTJo3b57qMrSAsPVJTU0VLVt3d7fqUoacUaNGqS5BC8aGraamRnRvXr586VvHLRtArBgbttWrV9PatWtpxowZIngM22wQS4mqC1Dp7NmzlJubK4LHrRxALBkdNpaXlyeWHDiAWMLXOf0LXFNTE7bZYuT9+/eqS9ACwtZn2rRpYomhf3d9+PCBRo8eLe4fPHhQcTVqGRs2/o8P3k7D0L/7Jk6cSA0NDdTT00OFhYWqy1HK2LBZ//H+gcOkNsSS0QMk/G3Lu2tx4FpbW0XLdvz4cXE0gB1WK8gBtdsiDvRa3cPOtYer8e3bt/TixQt6/Pix5Kq8IQ7nIPm3uxbvkBwN/vNxi2j3zzjQa3UfpLF+30j4Swz6M7Yb6a++vp727Nkj7q9fv158WOze+MNnLe3cBnrtYN5bxS1SjdbfEEJD2Prs2LFDLHXvxukMf7vIjA5bV1dXwGNdRyN5m3Ly5MmqywCHjA1bc3MzJScnB5wWQdfRyJKSErpw4YLqMsAhY8PGk9g3b94Up0WwAqdjy8ZzVHysHY+agrcZGzaWk5NDdXV1tGDBAqqsrNRyJHDZsmV04sQJ1WWAC4yeZ2M87M8t3OLFi1WXEtKnT59UlwAuMbpls3ALd+vWLS1bNlZeXq66BHABwtaHA8fbbOPGjVNdio91ir3S0lLFldjD278QHvYg0Zi132ZxcTHt27dPcTUD46kUHuHFHiShIWwaS09Pp5aWFs98eBG2yBA2cA3CFhm22QAkQdgAJEHYACRB2AAkQdgAJEHYYEB8hdaysjKxlw1Ez/h9IyGy6upqWrNmje+xdUS5P558HzZsGHV2dsouz1PQskFE+fn59PPnTzF3xnuysGPHjgW8Zv/+/eIcLnx4EqZtw0PYIKLfv3/T8OHDxX3eZYx31v7+/bvv+evXr4urtfJ12HQ88FYn2IMEbGtra6O0tLSA1isjI4OeP38u1v348UNciw0fqdDQsoFtHLTNmzcHrOOggT0YIAFb+AL0KSkpdOTIkYD13K3cuXOnuM/dSF2PCdQBWjYYUFVVFZ0/f546OjrEY+usZHy8HXcZeVqAYYAkMoQNIuJBkQ0bNohTi3OrxbcRI0aI5xYuXCiWpl8wwy4MkEBEobqFN27coKVLl9Ls2bOpsbHR15phgCQyhA1cw3ua8OQ2PlKhIWzgqsFcZMQ02GYDkARhA5AEYQOQBGEDkARhA5AEYQOQBGEDkARhA5AEYQOQBGEDkARhA5AEYQOQBGEDkARhA5AEYQNX4Rwk4SFs4CocyxYewgYgCcIGIAnCBq578+aN6hK0hLABSIKwAUiCsIHnNDc3++7zteGysrIUVmMfwgaeMnPmTJo+fbq4b5027+7du4qrsgdhA0+yJs+9NK+HsIFneSloDGEDT/Ja0BjCBq7hc/2zw4cPK65ETwgbuGLq1KniohqssrJSbFMFXzhxsJYvXy5+Do84jh8/PuRr+BpxV65ccfQ+siBs4NjIkSPp9evXlJ+fT52dnaKLt2TJEtq6dSvV1NRE9TM5ZFevXqWVK1dScXExtba2inVPnz71vYZDxteI+/Lli1u/Smz9BXCIP0aXL1/ut37OnDl/o/mI9YYq5L9btWqV7zl+P16eOXMmmpKVwCWjwJGWlhZKT0+nnp6efs99/fqVxo4dS+/evRvUz5w0aRI9evRIXGwxGHcpLadOnaKCgoLBF60ILmAPjkyYMCHscxUVFWLJ4RmsUEHzd/LkSU8FjaFlA8es1ia4dQu33s7PKykpod27d9t+Ly/AAAk41tTUJJYcBO428tJJKLZt20Z79+4VXVR//l1IC1/bOy8vL4qq5UPLBq7gObakpCTf49TUVGpra4v653GALl682G99RkYGPXv2TIQ4JyeH6uvrxfvw++kOYQPXdHV1UXJysqtdvLKyMjHQwnN33LLxttyTJ08oOzvbU0FjCBu4JhZhC2aFjfHcG3dbvQLbbOAp3d3dYum1oDGEDTwlISFBLL0WNIawgaekpKSoLiFq2GYD18jYZvMytGwAkiBsAJIgbACSIGwAkiBsAJIgbOCKzMxMMRLJeLeqLVu2KK5IPwgbOMbhamhooEOHDtHHjx+psLCQjh49SnPnzlVdmlYwzwaOFBUViYNEg+fW+HFiYiLdvn3bM6cHjzWEDRzhVi03N5euXbsW8rkxY8ZQR0eHgsr0g24kOJaWlhb2uW/fvkmsRG8IGzgyZcoUqq6uDvs8H4cG/6AbCY5xd5Fbt8+fPwesY9hP8n9o2cAWPpuVdW6R4BvjE6UGr2OhXs8DJyZC2MCWjRs3ilbKv6WyHvOtvLxcrDt37lzA+sbGRrGepwOsddY1AUxj5lcMOMKBsVopnlfj8/CXlpaKo6jXrVsnjqLmcDG+eCEHbtasWeKx0dtwsk/BDEPHihUrxOnAe7uQvnV1dXVi3YEDBwJe2xtEsb43jJKr1Ae6kRC1S5cu0aZNm+jVq1e+dXzWq9raWrp//37Aa7kV/PXrF7W3t8suUxsYjQSQBC0bgCQIG4AkCBuAJAgbgCQIG4AkCBuAJAgbgCQIG4Ak/wHMJYQv778pSAAAAABJRU5ErkJgggA=" >
·9i
·10i
·11i
·12i
在多结点力矩分配的计算中,当放松某个结点时,其余结点所处状态为( )
·相邻结点锁紧
·必须全部锁紧
·相邻结点放松
·全部放松
图示结构用力矩分配法计算时,结点A的约束力矩(不平衡力矩)为(以顺时针转为正)( )。<img src="data:image/png;base64,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" >
·3Pl/16
·-3Pl/8
·Pl/8
·-3Pl/16
裁定管辖包括（）
·级别管辖
·地域管辖
·移送管辖
·指定管辖
大陆法系国家的行政法学体系一般是在绪论基础上展开为（）。
·行政组织法
·行政作用法
·行政程序法
·行政救济法
·超静定铰结体系
·单跨静定梁的集合体
·单跨超静定梁的集合体
·静定刚架
图示梁在移动荷载作用下,使截面K产生最大弯矩的最不利荷载位置是( )
·
·
·
·
图示结构AB杆的固端弯矩
是( )·-6kN.m
·6kN.m
·1.5kN.m
·-1.5kN.m
图示直杆的力矩传递系数C=( )
·0
·-1
·1
·1/2
将三刚片组成无多余约束的几何不变体系,必要的约束数目是几个( )。
·2
·4
·6
·8
对图示体系进行几何组成分析,为( )体系。<img src="data:image/png;base64,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" >
·无多余约束的几何不变体系
·有多余约束的几何不变体系
·几何可变体系
·几何瞬变体系
图示结构中有( )根零杆。<img src="data:image/png;base64,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" >
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图示结构弯矩图形状正确的是( )。
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
·<img src="data:image/png;base64,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" >
图示结构的超静定次数是( )次。<img src="data:image/png;base64,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" >
·3
·4
·5
·6
图示结构用位移法求解时独立的结点位移是( )个角位移,( )个线位移。<img src="data:image/png;base64,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" >
·2,1
·2,2
·3,2
·3,3
位移法解图示结构内力时,取结点1的转角作为Z1,则主系数r11的值为( )。<img src="data:image/png;base64,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" >
·9i
·10i
·11i
·12i
在多结点力矩分配的计算中,当放松某个结点时,其余结点所处状态为( )
·相邻结点锁紧
·必须全部锁紧
·相邻结点放松
·全部放松
图示结构用力矩分配法计算时,结点A的约束力矩(不平衡力矩)为(以顺时针转为正)( )。<img src="data:image/png;base64,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" >
·3Pl/16
·-3Pl/8
·Pl/8
·-3Pl/16
裁定管辖包括（）
·级别管辖
·地域管辖
·移送管辖
·指定管辖
大陆法系国家的行政法学体系一般是在绪论基础上展开为（）。
·行政组织法
·行政作用法
·行政程序法
·行政救济法