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佳木斯大学语言治疗学
线性整步电压不包含____信息。
·相角差;
·电压幅值差。
·频率差;
·都不是
位移法的基本结构是()
·静定结构
·单跨超静定梁系
·超静定结构
·单跨静定梁系
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( )
·3i
·10i
·6i
·12i
对称结构在正对称荷载作用下,在对称切口处有( )
·正对称的弯矩、剪力和轴力
·弯矩、剪力和轴力都不正对称
·正对称的弯矩和轴力,剪力为零
·正对称的剪力,弯矩和轴力均为零
等直杆的一端转动单位角另一端固定时,劲度系数(或称转动刚度)为4i,这是只考虑弯曲变形的结果,如果再计入剪切变形的影响,劲度系数的数值将会()
·增大
·缩小
·不变
·可能增大也可能缩小,与剪力的正负号有关。
三刚片组成无多余约束的几何不变体系,其联结方式是( )。
·以任意的三个铰相联
·以不在一条线上三个铰相联
·以三对平行链杆相联
·以三个无穷远处的虚铰相联
在均布荷载作用下,对称三铰拱的合理拱轴线是什么曲线( )。
·抛物线
·双曲线
·悬链线
·圆弧曲线
图示虚拟力状态可求出什么( )<img src="data:image/png;base64,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" >
·A点线位移
·A点B点相对位移角
·AB杆的转角
·B点线位移
超静定结构在荷载作用下的内力和位移计算中,各杆的刚度为( )。
·均用相对值
·必须均用绝对值
·内力计算用绝对值,位移计算用相对值
·内力计算可用相对值,位移计算须用绝对值
图示对称结构,截面C的( )。<img src="data:image/png;base64,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" >
·弯矩等于零
·剪力等于零
·轴力等于零
·内力均不为零
图示体系为( )
题1图
·无多余约束的几何不变体系
·瞬变体系
·有多余约束的几何不变体系
·常变
图所示结构C截面弯矩为( )
·qa2/6
·qa2/2
·qa2/4
·0
在竖向均布荷载作用下,三铰拱的合理轴线为( )
·二次抛物线
·圆弧线
·悬链线
·正弦曲线
图示结构,求A、B两点相对线位移时,虚力状态应在两点分别施加的单位力为( )
·竖向反向力
·连线方向反向力
·水平反向力
·反向力偶
图示桁架的零杆数目为( )
·5
·6
·7
·8
·相角差;
·电压幅值差。
·频率差;
·都不是
位移法的基本结构是()
·静定结构
·单跨超静定梁系
·超静定结构
·单跨静定梁系
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( )

·3i
·10i
·6i
·12i
对称结构在正对称荷载作用下,在对称切口处有( )
·正对称的弯矩、剪力和轴力
·弯矩、剪力和轴力都不正对称
·正对称的弯矩和轴力,剪力为零
·正对称的剪力,弯矩和轴力均为零
等直杆的一端转动单位角另一端固定时,劲度系数(或称转动刚度)为4i,这是只考虑弯曲变形的结果,如果再计入剪切变形的影响,劲度系数的数值将会()
·增大
·缩小
·不变
·可能增大也可能缩小,与剪力的正负号有关。
三刚片组成无多余约束的几何不变体系,其联结方式是( )。
·以任意的三个铰相联
·以不在一条线上三个铰相联
·以三对平行链杆相联
·以三个无穷远处的虚铰相联
在均布荷载作用下,对称三铰拱的合理拱轴线是什么曲线( )。
·抛物线
·双曲线
·悬链线
·圆弧曲线
图示虚拟力状态可求出什么( )<img src="data:image/png;base64,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" >
·A点线位移
·A点B点相对位移角
·AB杆的转角
·B点线位移
超静定结构在荷载作用下的内力和位移计算中,各杆的刚度为( )。
·均用相对值
·必须均用绝对值
·内力计算用绝对值,位移计算用相对值
·内力计算可用相对值,位移计算须用绝对值
图示对称结构,截面C的( )。<img src="data:image/png;base64,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" >
·弯矩等于零
·剪力等于零
·轴力等于零
·内力均不为零
图示体系为( )
题1图·无多余约束的几何不变体系
·瞬变体系
·有多余约束的几何不变体系
·常变
图所示结构C截面弯矩为( )

·qa2/6
·qa2/2
·qa2/4
·0
在竖向均布荷载作用下,三铰拱的合理轴线为( )
·二次抛物线
·圆弧线
·悬链线
·正弦曲线
图示结构,求A、B两点相对线位移时,虚力状态应在两点分别施加的单位力为( )

·竖向反向力
·连线方向反向力
·水平反向力
·反向力偶
图示桁架的零杆数目为( )

·5
·6
·7
·8