采煤机上采用齿轮传动是因为齿轮传动具有()等特点。A、平稳性较高B、传递运动准确可靠

题型:多项选择题

问题:

采煤机上采用齿轮传动是因为齿轮传动具有()等特点。

A、平稳性较高

B、传递运动准确可靠

C、尺寸小

D、转速高

E、能保证瞬时传动比恒定

考点:综采维修钳工(高级)综采维修钳工(高级)题库
题型:多项选择题

清点库存现金时,库内不得存在()情况,

A.白条;

B.他行存单;

C.与现金总账余额不符;

D.未记账的本社凭证.

题型:多项选择题

甲型H1N1流感不可怕

       ①一般来说,人感染甲型H1N1流感后症状类似感冒,会出现发烧、咳嗽、疲劳、食欲不振等症状。A这与一般流感相似,但传染性强,人感染后进展快。B比较明显的症状为突然发烧到38℃以上。有些人还会出现腹泻和呕吐症状。以往也曾报告因人感染甲型H1N1流感引起严重疾病,甚至导致死亡,C例如引发肺炎和呼吸衰竭等。  

       ②感染甲型H1N1流感病毒的潜伏期在7天左右,这段时间里,患者均视为具有潜在传染性,儿童尤其是幼儿在较长时期内可能均具有潜在传染性。

       ③但是,甲型H1N1流感疫情并不可怕,是可防可控可治的。甲型H1N1流感疫情发生不久,有专家指出媒体可能放大了疫情,初夏是疫情高发期,类似的疫情历史上很多,甲型H1N1流感很可能过了夏天就没事了。我国卫生部长陈竺在联合国经济及社会理事会上指出:“我相信,用科学的卫生知识武装民众,人感染甲型H1N1流感这一疫情,应该是可防可控可治的。”他强调国际社会要加强合作,相互帮助,分享知识,携手战胜威胁人类健康的公共卫生事件。卫生部委托专家研究拟定了《人感染甲型H1N1流感诊疗方案(2009版)》,于4月30日印发各地并实施。世卫组织总干事陈冯富5月22日在日内瓦第62届世卫大会上强调了对甲型H1N1流感防治工作。不久,美国已拨款10亿美元启动甲型疫苗测试等工作。        

       ④疾病传播途径主要为呼吸道传播,也可通过接触感染的动物或其粪便、周围污染的环境或气溶胶等途径传播。某些毒株如H1N1可在人与人之间传播,其传染途径与流感类似,通常是通过感染者咳嗽或打喷嚏等。因此,只要我们从疾病传播的主要途径入手就可能预防病毒感染。  

       ⑤越是年轻、体质强壮的人,身体的免疫功能越敏感,发挥的免疫能量就越高。甲型H1N1流感一旦侵犯这样的人,其人体的免疫细胞就会迅速释放,这是因为免疫功能旺盛,一下子释放太多,就会破坏人体自身免疫细胞的平衡状态,对身体造成更大的伤害。因此要特别注意对这部分高危人群的防治工作,当然也应注意对老人和儿童的防治。   

       ⑥另外,甲型H1N1流感病毒对热敏感,高温可灭活。因此,只要以高温就可灭甲型H1N1流感病毒。(根据相关资料编写)

1.请根据你对文章的阅读,简要分析甲型H1N1流感的主要特点。

                                                                                                                                               

2.请从选文第①语段的三个画线句子中任选一句,指出说明方法并分析其作用。

                                                                                                                                                       

3.选文中“甲型H1N1流感很可能过了夏天就没事了”的“很”能否删去?为什么? 

                                                                                                                                                        

4.鉴于当前甲型H1N1流感疫情仍在蔓延,我国也发现多例输入性确诊病例,我们必须高度重视,全力控制疫情在我国传播。 请你为学校校园防控活动拟写一条宣传标语。

                                                                                                                                                           

                                                                                                                                                           

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完形填空。
     "Excuse me," said the young man, standing shyly at the open church door. "I'm here to   1   an Easter
basket for my daughter. Am I in the   2   place?" "Well, we have baskets,   3   they're not East baskets for
kids; they're food baskets," I explained.
     That morning I had arrived at St. Michael's Church in Carmichael, California, to help   4   the baskets
to needy families for Easter. To make sure the needy would   5   the offer, we had handed out numbers
to them   6   matched the basket they were supposed to receive. Each one contained a full Easter dinner-a
whole ham, potatoes, bread, vegetables and a pie- enough food to help   7   a family for a week.
     "Why don't you come in?" I said to the man. He looked   8  . He   9   his head, "I can't. My daughter is
waiting for me over there. I'm  10  for the food, but  11  I heard you were giving away baskets for Easter,
well, I thought they would be Easter baskets for  12 ." He continued, "I  13  my daughter one, and I wanted
to surprise her."
     I felt bad, but there was  14  we could do. The man handed me his  15 , and I walked over to the baskets.
A bulge (凸出) in one of the baskets caught my  16 . What was that? I wondered. Leaning over and looking
more  17 , I could see, unmistakably, an Easter basket-filled with candy, chocolate and Easter eggs-decorated
with ribbons (丝带). One of the  18  must have added it by mistake! I thought. Then I looked at the man's
number in my  19 . Well, he'll be...
     "Happy Easter," I said to the man, handing him the only food basket with an Easter basket inside-the very
same basket with his number on it. "Someone already knew just  20  you need."
( )1. A. send up      
( )2. A. wrong        
( )3. A. and          
( )4. A. give out     
( )5. A. accept       
( )6. A. that         
( )7. A. offer        
( )8. A. disappointing
( )9. A. nodded       
( )10. A. helpful     
( )11. A. while       
( )12. A. the rich    
( )13. A. gave        
( )14. A. nothing     
( )15. A. name        
( )16..4. eye         
( )17. A. hardly      
( )18. A. baskets     
( )19. A. pocket      
( )20. A. which       
B. pick up        
B. same           
B. or             
B. give up       
B. bring         
B. who            
B. feed          
B. disappointed  
B. turned          
B. careful       
B. when          
B. the poor     
B. bought        
B. something     
B. wish          
B. hands         
B. quickly        
B. volunteers    
B. shop          
B. how          
C. give out   
C. different   
C. but           
C. give in      
C. carry      
C. whom         
C. match        
C. pleasing    
C. shook         
C. grateful   
C. before       
C. adults     
C. asked      
C. anything     
C. number      
C. feet       
C. closely        
C. workers    
C. list         
C. what       
D. take out     
D. right        
D. so            
D. give off      
D. receive    
D. what          
D. work           
D. pleased   
D. raised          
D. useful      
D. until         
D. children   
D. promised      
D. everything                
D. food         
D. clothes       
D. hopefully     
D. sellers    
D. hand          
D. that      
题型:多项选择题

粒径()以下的可吸入性颗粒物在肺泡内沉积率最高。

题型:多项选择题

曹雪芹在《红楼梦》中写了太虚幻境红楼梦十二曲中,请问哪一个曲子是唱王熙凤的?

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