凹辊式涂布机的工作原理?

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问题:

凹辊式涂布机的工作原理?

考点:造纸工考试造纸工考试题库
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某横波在介质中沿x轴正方向传播,t=0时刻,O点开始向正方向运动,经t=0.2 s,O点第一次到达正方向最大位移处,某时刻形成的波形如图所示,下列说法正确的是________.

A.该横波的波速为5 m/s

B.质点L与质点N都运动起来后,它们的运动方向总相反

C.在0.2 s的时间内质点M通过的路程为1 m

D.在t=2.6 s时刻,质点M处于平衡位置,正沿y轴负方向运动E.图示波形图可能是t=1.2 s时刻的

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完形填空。
     Mrs Wang lives in Nanjing now. She is 102 years old. People often ask her   1   she can keep healthy in
her life. Mrs Wang says everyone   2   live to 102 if he eats healthy food and does some exercise every day.
     Mrs wang thinks, first of all,   3   is very important. She often   4   a glass of milk and two eggs for it at
about 8:00 a.m. Milk and eggs give her energy. So she doesn't often feel   5   in the morning. She   6   eats
snacks because she doesn't think they are healthy food. She seldom eats meat too. She usually has some   7   
and vegetables for lunch and supper. And   8   meals, she usually has an apple or a banana.
     Mrs wang does some exercise too. She thinks she is still young. She plays Taiji for   9   every day.
Sometimes she also dances with her friends. "Do you want to be  10  forever (永远)? I'm sure you can if
you have a good lifestyle!" Mrs Wang says to us.
( )1. A. what        
( )2. A. can        
( )3. A. lunch      
( )4. A. is having   
( )5. A. tired      
( )6. A. often      
( )7. A. pork        
( )8. A. beside      
( )9. A. a year      
( )10. A. young      
B. when          
B. should        
B. breakfast    
B. are having     
B. happy        
B. usually      
B. rice           
B. in front of  
B. a week        
B. old          
C. where          
C. need          
C. supper        
C. has            
C. well          
C. always        
C. beef          
C. behind        
C. 2 o'clock    
C. luck        
D. how             
D. must            
D. dinner          
D. have            
D. excited                                      
D. never           
D. meat            
D. between           
D. half an hour  
D. hungry          
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简述人力资源规划的类别及含义。

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22岁,未婚,有性生活史。因停经35天,下腹痛伴少量 * * 流血2小时急诊入院。查体:面色苍白,血压60/40mmHg,心率120次/分,腹肌紧张,有下腹压痛,反跳痛。妇科检查:子宫正常大小,质软,右附件区增厚,压痛明显,尿HCG(+)。B超提示:右附件见混合性包块,盆腔中量积液。

为明确诊断首选()

A.腹部X线拍片

B.诊刮术

C.全腹造影

D.宫腔镜检查

E.后穹隆穿刺术

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电子节气门系统主要由()和发动机ECU组成。

A、加速踏板位置传感器

B、电子节气门体

C、节气门位置传感器

D、节气门

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