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【单选题】
张应力使物体收缩
A.
正确
B.
错误
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【单选题】A．90MPa(拉应力) B．90MPa(压应力) C．50MPa(拉应力) D．60MPa(压应力)
A.
等直杆受力如下图所示，其横截面积A=100mm2，则截面，m-m上的正应力为（）。
B.
C.
【单选题】People who do sleep research tell us that a person is a sort of "information processor." We have two ways to use the information we get each day. The first process is used when we are awake. It takes...
A.
people are likely to sleepwalk
B.
people become mentally active
C.
people often wake up
D.
people might do odd things
【单选题】子宫收缩力异常指的是
A.
节律性、极性、强度均不正常
B.
节律性、对称性正常但失去正常强度
C.
对称性、极性正常，节律性异常
D.
节律性正常，对称性和极性异常
E.
节律性、对称性、极性及宫缩的频率和强度均异常
相关题目：
【单选题】A．90MPa(拉应力) B．90MPa(压应力) C．50MPa(拉应力) D．60MPa(压应力)
A.
等直杆受力如下图所示，其横截面积A=100mm2，则截面，m-m上的正应力为（）。
B.
C.
【单选题】People who do sleep research tell us that a person is a sort of "information processor." We have two ways to use the information we get each day. The first process is used when we are awake. It takes...
A.
people are likely to sleepwalk
B.
people become mentally active
C.
people often wake up
D.
people might do odd things
【单选题】子宫收缩力异常指的是
A.
节律性、极性、强度均不正常
B.
节律性、对称性正常但失去正常强度
C.
对称性、极性正常，节律性异常
D.
节律性正常，对称性和极性异常
E.
节律性、对称性、极性及宫缩的频率和强度均异常
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