2021 Basic principles of steel structure(Chang’an University) 最新满分章节测试答案
本答案对应课程为:点我自动跳转查看
本课程起止时间为:2021-03-01到2021-05-31
本篇答案更新状态:已完结
01 Introduction Unit test one
1、 问题:Which of the following countries was the first to use steel structures in the world?
选项：
A:Germany
B:China
C:British
D:America
答案: 【America】
2、 问题:Which of the following countries was the first to use iron structures in the world?
选项：
A:China
B:America
C:British
D:Germany
答案: 【China】
3、 问题:Which material has the largest ratio of strength to density?
选项：
A:Timber
B:Concrete
C:Masonry
D:Steel
答案: 【Steel】
4、 问题:Which of the following are characteristics of the steel structure?
选项：
A:High strength and low weight
B:Good plasticity and toughness
C:Easy to manufacture and construct
D:Weak corrosion resistance
答案: 【High strength and low weight;
Good plasticity and toughness;
Easy to manufacture and construct;
Weak corrosion resistance】
5、 问题:Which of the following characteristics will increase the construction cost?
选项：
A:Good airtightness and water tightness
B:Weak fire resistance
C:High strength and low weight
D:Brittle fracture tendency under some states
答案: 【Weak fire resistance;
Brittle fracture tendency under some states】
02Structural steels Unit test two
1、 问题:Impact toughness is a comprehensive expression of strength and ( ).
选项：
A:Elasticity
B:Stiffness
C:Stability
D: Plasticity
答案: 【 Plasticity】
2、 问题:For the tension test of carbon steel, which of the following values is the highest? ( )
选项：
A:Yield stress
B:Tensile strength
C: Proportional limit
D:Elastic limit
答案: 【Tensile strength】
3、 问题:Q 460C is the ( ).
选项：
A:carbon structural steel
B: forged steel
C:cast steel
D: low alloy structural steel
答案: 【 low alloy structural steel】
4、 问题:( ) is an impurity component in carbon steel.
选项：
A:Carbon
B:Copper
C:Manganese
D: Silicon
答案: 【Copper】
5、 问题:Increasing Phosphorus content reduces plasticity, cold-bend performance, and ( ).
选项：
A: Weldability
B:Strength
C:Toughness
D:Rust resistance
答案: 【 Weldability】
03 Beams Unit test three
1、 问题:When there is a large fixed concentrated load on the beam, what measures should be taken at the action point ( ).
选项：
A:Set longitudinal stiffeners
B:Increase flange thickness
C:Set transverse stiffeners
D:Reduce web thickness
答案: 【Set transverse stiffeners】
2、 问题:Welded I-section beam webs are provided with transverse stiffeners, the purpose is ( ).
选项：
A:Improving the local stability of the beam
B:Improve the overall stability of the beam
C:Improve the bending strength of the beam
D:Improve the shear strength of the beam
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