图示结构用位移法计算时的基本未知量最小数目为：（） A.10 B._爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

图示结构用位移法计算时的基本未知量最小数目为：（）

A.10

B.9

C.8

D.7

答案

参考答案：B

解析：铰所在部位为复合结点，上下杆刚结，有独立角位移。

选择题

如果从点A看点B的方向为北偏东25°，那么从点B看点A的方向为（　　）

A．南偏东25°

B．南偏西25°

C．南偏东65°

D．南偏西65°

单项选择题

B

Questionnaire

Read the questions and answer YES or No, then you will find out how good you are.
1. When you don’t understand something, you ask questions.
2. You like listening to older people talk about the past.
3. You think that you can learn something interesting from everyone around you.
4. You are brave enough when you have to talk to people you don’t know.
5. You enjoy reading books about famous people.
6. You always see and talk to different people.
7. You are interested in learning new ways of doing things.
8. You enjoy sharing experiences with friends and learning from people of all ages.
9. You talk a lot about yourself.
10. Even if you are often wrong, you make your own decisions.
11. You hate teaching what you are good at: sports, technology, whatever.
12. Your parents don’t understand you, so you don’t talk to them much.
SCORE NOW!
Score 2 points if you answer YES to each of the first 8 questions, and O if you choose NO.
Score 2 points if you answer NO to each of the last 4 questions, and O if you choose YES.
18—24 You are friendly and open-minded. You make people fell important by listening to what they have to say. You’ll probably succeed in learning all kinds of interesting things. Good for you!
10—16 Remember that every single person you know can teach you something. You will greatly make your life rich and colorful.
0—8 About 400 years ago, a famous writer wrote," No man is an island." This is still true today. Try to be more open and interested in people around you.

When you score 22 points, you are ______.

A．shy and nervous

B．silent and serious

C．open and friendly

D．brave and p