【判断题】【消耗次数：1】
力法的典型方程是体系的变形协调方程。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
力法典型方程中δij的物理意义为（）。
①
在i处作用的单位力引起的j处的位移大小
②
在j处作用的单位力引起的i处的位移大小
③
在j处作用的单位位移引起的i处的力大小
④
在i处作用的单位位移引起的j处的力大小
随机题目
【单选题】
_________ the early nineteenth century, people did not use stamps.
①
In
②
On
③
As
④
For
【单选题】
When a program has a small number of people_________ it, it is discontinued.
①
looking
②
watching
③
hearing
④
listening
【单选题】
You cannot remember things_________ you are tired or unhappy.
①
why
②
what
③
where
④
when
【单选题】
Jogging makes the heart stronger and helps people lose_________.
①
weight
②
length
③
height
④
width
【单选题】
I want to mail this letter to the U.S.._________ is the postage, please?
①
How many
②
How much
③
How often
④
How long
【单选题】
I asked some policemen to tell me the way home. They smiled and answered me_________ .
①
slowly
②
heavily
③
politely
④
rudely
【单选题】
You can increase your_________ a quarter or half mile every two weeks or so.
①
difficulty
②
discovery
③
disagreement
④
distance
【单选题】
Professor White is out of office right now. Can you leave a_________ or call later?
①
message
②
information
③
idea
④
advice