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【单选题】
在拉丁舞项目中起源于古巴,被称为“拉丁舞之魂”,舞蹈风格柔美浪漫的舞蹈是( )。
A.
恰恰舞
B.
伦巴舞
C.
华尔兹舞
D.
维也纳华尔兹舞
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【单选题】As shown in the figure, the square-sectional slender column with the side length mm of the cross-section is exerted with an axial pressure F= 4 π 2 kN , and the elastic modulus E= 100GPa. Determine th...
A.
n st =1
B.
n st =2
C.
n st =3
D.
n st =4
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【单选题】Knowing that represents the critical stress of the slender column, which of the following statements is correct?
A.
is related to the critical load and the cross-sectional area of the column, and is independent of the material.
B.
is related to the s lenderness ratio of the column, and is independent of the cross-sectional area.
C.
is only related to the material, the shape and size of the cross-section of the column.
D.
The value of should not exceed the limit of proportional of the material.
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【单选题】Knowing that represents the critical stress of the pressure column, which of the following statements is correct? (1) The value of of the slender column is related to the material. (2) The value of of...
A.
(1), (2)
B.
(3), (4)
C.
(1), (3)
D.
(2), (4)
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【单选题】As the both ends pinned slender column with rectangle cross-section is unstable, which is correct in the following options?
A.
The critical pressure force F cr =π 2 EI y /l 2 , and the deflection curve is on the xy plane
B.
The critical pressure force F cr =π 2 EI y /l 2 , and the deflection curve is on the xz plane
C.
The critical pressure force F cr =π 2 EI z /l 2 , and the deflection curve is on the xy plane
D.
The critical pressure force F cr =π 2 EI z /l 2 , and the deflection curve is on the xz plane
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【简答题】机织全棉阿拉伯袍
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【单选题】The slender column AB is exerted by an axial pressure force(see the figure). Assume the critical force of the column is P 1j , which of the following statements is correct?
A.
The axis of column AB will keep straight only as ,, and only compression deformation will be produced for the column.
B.
The axis of column AB will keep straight as , and there will be no bending deformation for the column.
C.
The column AB will not keep equilibrium as .
D.
Make in order to ensure the column AB is in equilibrium.
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【判断题】反应时会观察到分水器中收集到液体物质,且分为上下两层,随着反应的进行,分水器中液体逐渐增多至充满时,上层液体会从左侧支管自动流回反应瓶( )
A.
正确
B.
错误
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【判断题】当一根导线与另一根导线成十字交叉,则系统会自动放置节点
A.
正确
B.
错误
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【单选题】新生儿黄疸在生后24h内出现应首先考虑
A.
生理性黄疸
B.
新生儿溶血症
C.
新生儿败血症
D.
新生儿肝炎
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【单选题】黄疸在出生后24h内出现者应首先考虑
A.
新生儿生理性黄疸
B.
新生儿溶血症
C.
新生儿肝炎
D.
新生儿败血症
E.
胆道闭锁
查看完整题目与答案
相关题目：
【单选题】As shown in the figure, the square-sectional slender column with the side length mm of the cross-section is exerted with an axial pressure F= 4 π 2 kN , and the elastic modulus E= 100GPa. Determine th...
A.
n st =1
B.
n st =2
C.
n st =3
D.
n st =4
查看完整题目与答案
【单选题】Knowing that represents the critical stress of the slender column, which of the following statements is correct?
A.
is related to the critical load and the cross-sectional area of the column, and is independent of the material.
B.
is related to the s lenderness ratio of the column, and is independent of the cross-sectional area.
C.
is only related to the material, the shape and size of the cross-section of the column.
D.
The value of should not exceed the limit of proportional of the material.
查看完整题目与答案
【单选题】Knowing that represents the critical stress of the pressure column, which of the following statements is correct? (1) The value of of the slender column is related to the material. (2) The value of of...
A.
(1), (2)
B.
(3), (4)
C.
(1), (3)
D.
(2), (4)
查看完整题目与答案
【单选题】As the both ends pinned slender column with rectangle cross-section is unstable, which is correct in the following options?
A.
The critical pressure force F cr =π 2 EI y /l 2 , and the deflection curve is on the xy plane
B.
The critical pressure force F cr =π 2 EI y /l 2 , and the deflection curve is on the xz plane
C.
The critical pressure force F cr =π 2 EI z /l 2 , and the deflection curve is on the xy plane
D.
The critical pressure force F cr =π 2 EI z /l 2 , and the deflection curve is on the xz plane
查看完整题目与答案
【简答题】机织全棉阿拉伯袍
查看完整题目与答案
【单选题】The slender column AB is exerted by an axial pressure force(see the figure). Assume the critical force of the column is P 1j , which of the following statements is correct?
A.
The axis of column AB will keep straight only as ,, and only compression deformation will be produced for the column.
B.
The axis of column AB will keep straight as , and there will be no bending deformation for the column.
C.
The column AB will not keep equilibrium as .
D.
Make in order to ensure the column AB is in equilibrium.
查看完整题目与答案
【判断题】反应时会观察到分水器中收集到液体物质,且分为上下两层,随着反应的进行,分水器中液体逐渐增多至充满时,上层液体会从左侧支管自动流回反应瓶( )
A.
正确
B.
错误
查看完整题目与答案
【判断题】当一根导线与另一根导线成十字交叉,则系统会自动放置节点
A.
正确
B.
错误
查看完整题目与答案
【单选题】新生儿黄疸在生后24h内出现应首先考虑
A.
生理性黄疸
B.
新生儿溶血症
C.
新生儿败血症
D.
新生儿肝炎
查看完整题目与答案
【单选题】黄疸在出生后24h内出现者应首先考虑
A.
新生儿生理性黄疸
B.
新生儿溶血症
C.
新生儿肝炎
D.
新生儿败血症
E.
胆道闭锁
查看完整题目与答案