搜题请搜索小程序“爱下问搜题”
问题 单项选择题

保险费是按赔偿限额选择适用的费率计算，无累计赔偿限额的保险费计算公式为（）。

A.保险费＝累计赔偿限额×适用费率

B.保险费＝每次事故赔偿限额×适用费率

C.保险费＝场地占有面积×单位面积保险费

D.保险费＝赔偿限额×事故发生次数×单位保险费

答案

参考答案：B

完形填空
完形填空

       The bicycle is one of the simplest (最简单的) yet most useful inventions in the world. What is most
surprising is that it was not invented earlier,   1   the great inventor Leonardo da Vinci had drawn pictures
for bicycles and also for flying machines and some other things. Those things  were not produced   2   long after he died.
       A person riding a bicycle use   3   energy(能量)to make the bicycle move, and there is no pollution
at all when you are riding. Even so, m developed   4  , most people don't travel to  work by bicycle. It is
not because the bicycles are expensive or people feel   5   if they ride to work. It's because    6   cars on
the roads becomes larger. It certainly becomes   7   to ride a bi-cycle. As a result, more people put their
bicycles away and go to work   8   their cars and, in this way, the situation(情形)is made more serious.  9   the best way to make riding safer and more popular is to create paths(开设通道)only for bicycles, and
to make   10    so difficult and expensive for drivers to take their cars into the city that they will go back
to use their bicycles.


( )1. A．although          
( )2. A．when              
( )3. A．much              
( )4. A．world            
( )5. A．comfortable      
( )6. A．the number of    
( )7. A．safer            
( )8. A．by                
( )9. A. Always            
( )10.A．it                
                                          		B．so              
B．before          
B．quite a lot of  
B．countries        
B．1ucky            
B．a number of      
B．more dangerous  
B．in              
B．May be          
B．them          
C．but              
C．since            
C．very little      
C．1and            
C．sorry            
C．this kind of    
C．much dangerous  
C．use              
C．Perhaps          
C．us               
                                		D．because         
D．until           
D．many            
D．earth           
D．tired           
D．a kind of       
D．safe            
D．drive           
D．Nearly          
D．that      
查看答案
单项选择题

彩色多普勒成像时不影响帧频的因素是()

A．角度大小

B．深度

C．探头频率

D．滤波器

E．脉冲重复频率
查看答案