问题 多项选择题

以下关于灰斗的技术要求描述正确的是()。

A、每台炉除尘器灰斗总数量为6个,灰斗出灰口法兰标高相对除尘器0米暂定为3.5米

B、每个灰斗设有2个灰斗气化板,布置在灰斗中心线上,并避开捅灰孔。为了避免烟气短路,灰斗内装有阻流板,它的下部尽量距排灰口远些

C、灰斗斜壁与水平面的夹角为60°。相邻壁交角的内侧,作成圆弧型,圆角半径为200mm

D、灰斗有良好的保温措施,并装设灰斗加热装置,使其加热负荷保持灰斗壁温不低于120℃,且要高于烟气露点温度5-10℃

答案

参考答案:A, B, C, D

完形填空
完形填空。
      China is a large country of agriculture (农业). We all know that there are more than 800 million   1   in China.
China starts to   2   the science of agriculture much earlier   3   other countries in the world.   4   people in
Europe and America were trying to shoot wild animals and birds for food, farmers in China were   5   the
science of agriculture. For example, Jia Sixie, who lived in the Northern Wei period (386-534AD),   6   one of
the farming pioneers. After he finished his work in government, he   7   home and spent his time on research
into agriculture. He   8   information, did experiments and learnt from the experience of farmers. He wrote a
book called Qi Min Yao Shu. The book   9   has 110000 words is about both farming and gardening. This book
is   10   to be an important summary (概要) of the knowledge of farming.
( ) 1.A.workers   
( ) 2.A.develop   
( ) 3.A.to        
( ) 4.A.Where     
( ) 5.A.trying    
( ) 6.A.were      
( ) 7.A.left      
( ) 8.A.advised   
( ) 9.A.who       
( ) 10.A.made   
B.farmers    
B.grow       
B.till        
B.For         
B.working         
B.was         
B.built       
B.improved    
B.whom        
B.considered
C.pioneers    
C.choose      
C.then        
C.While      
C.studying         
C.came       
C.returned   
C.collected   
C.it          
C.kept      
D.scientists   
D.interest     
D.than         
D.Because         
D.growing      
D.be           
D.destroyed    
D.planted      
D.which        
D.studied    
多项选择题