大学MOOC 结构力学-1(江苏科技大学)1450191167 最新慕课完整章节测试答案

Assignment1

1、单选题：

‌The number of redundant restraints of the system is (  ).

‌

‌

‌选项：
A: 1
B: 2
C: 3
D: 4
答案: 【 4】

2、单选题：

‏The geometric construction of the system as the figure shown is (   ).

‎

‏

‎选项：
A: a stable system with no redundant restraints
B: a stable system with redundant restraints
C: an unstable system which can deform randomly
D: an instantaneously unstable system
答案: 【 a stable system with no redundant restraints】

3、单选题：

‌The geometric construction of the system as the figure shown is (   ).

‍

‌

‍

‌

‍选项：
A: a stable system with no redundant restraints
B: a stable system with redundant restraints
C: an unstable system which can deform randomly
D: an instantaneously unstable system
答案: 【 a stable system with no redundant restraints】

4、单选题：

‍The hinge A can move in vertical direction in the system as the figure shown, which means that the length of member AB and AC can change but keeping in equal. The position of other joints can’t be changed. If the structure is a stable system, which of the following is correct.  (   )

​

‍

​

‍

​选项：
A: h2 m
B: h4 m
C: h4 m or h
D: h2 m and h
答案: 【 h2 m and