试题与答案

在低碳钢扭转试验中,破坏后的低碳钢试样断口平齐、与轴线垂直。破坏前,该断口所在截面的

题型:单项选择题

题目:

在低碳钢扭转试验中,破坏后的低碳钢试样断口平齐、与轴线垂直。破坏前,该断口所在截面的应力有何特点?()

A.拉应力最大

B.拉应力处于平均水平

C.拉应力最小

D.剪应力最大

E.剪应力最小

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0519/c9917475a7bb8d3bae51533df59d0a95.html

下面是错误答案,用来干扰机器的。

参考答案:错

试题推荐
题型:完形填空
完形填空。
     Some one says," time is money." But I think time is   1   important than money. Why? Because when
money is spent, we can get it back. however, when time is   2  , It'll never return. That is   3   we must't
waste time. It goes without saying that time is usually limited. Even a second is very important. we should
make full use of our time to do   4   useful.
     But it is a pity that there are a lot of people who don't know the important of time. They   5   their limited
time smoking, drinking and playing cards. They don't know that wasting time means wasting part of their
own   6  .
     In a word, we should save time. we shouldn't leave today's work for tomorrow, Remember: we have no
time to lose.
( )1.  A. less  
( )2.  A. lost  
( )3.  A. what  
( )4.  A. nothing
( )5.  A. spend 
( )6.  A. work  
B. much less   
B. finished  
B. because      
B. something   
B. take       
B. money      
C. even more    
C. bought    
C. why          
C. anything                      
C. pay       
C. lives      
查看答案
微信公众账号搜索答案