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【单选题】
下面说法中错误的一项是( ):A.
多余约束是从对体系的自由度是否有影响的角度看是多余的
B.
有多余约束并且几何不变是超静定结构的几何特征
C.
将超静定结构中的多余约束去掉即得静定结构
D.
在一个由4根直杆用连接而成的封闭框上加一个铰相当于减少2个约束
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Tian Dong, together with his classmates, _________ because of _________ the school rules.
A.
was punished; obeying
B.
were punished; breaking
C.
were punished; obeying
D.
was punished; breaking
【多选题】多选题 窗体顶端 题目: 货物运输车辆运行作业计划编制的原则主要有( )。 选项:
A.
唯利是图原则
B.
急救物资优先原则
C.
兼顾平衡原则
D.
运力运量匹配原则
E.
经济效益原则
【单选题】Tian Dong together with his classmates, _______because of _______________the school rules.
A.
was punished, breaking
B.
were punished , breaking
C.
was punished, obeying
D.
were punished, obeying
【单选题】Tian Dong, together with his classmates, _______ because of ______ the school rule.
A.
was punished; obeying
B.
were punished; breaking
C.
were published; obeying
D.
was punished; breaking
相关题目：
【多选题】多选题 窗体顶端 题目: 货物运输车辆运行作业计划编制的原则主要有( )。 选项:
A.
唯利是图原则
B.
急救物资优先原则
C.
兼顾平衡原则
D.
运力运量匹配原则
E.
经济效益原则