校园有一个周长是125.6米的圆形花坛,这个花坛的占地面积是多少?

题型:解答题

问题:

校园有一个周长是125.6米的圆形花坛,这个花坛的占地面积是多少?

考点:圆的面积
题型:解答题
完形填空。
     Hello. I’m Tom. I’m   1    the U.S.A. But   2   family (家庭) is in Shanghai now (现在). This is my   3  , her name is Gao Feifei. She is from Beijing. She   4   fine.   5   teaches (教) me Chinese (汉语).
  6   is Peter. He   7   from Canada. His mom is in China, too. 
       8   is a teacher. Is Amy from Canada? Yes, Peter   9   she are from Canada.   10  are good friends(朋友). We all like (喜欢) China.
( ) 1. A. to
( ) 2. A. my
( ) 3. A. mom          
( ) 4. A. is
( ) 5. A. He
( ) 6. A. He
( ) 7. A. is
( ) 8. A. He
( ) 9. A. and
( ) 10. A. He
B. from
B. he
B. class                
B. am
B. She
B. It
B. isn’t
B. his
B. from
B. You
C. /        
C. her    
C. teacher                             
C. are    
C. Her    
C. This    
C. aren’t
C. She    
C. too    
C. They    
题型:解答题

车床上,刀尖圆弧只有在加工()时才产生加工误差。

A、端面;

B、圆柱;

C、圆弧

题型:解答题

下列哪种行为会受到200元以上2000元以下罚款,并处吊销机动车驾驶证?

A.违反道路通行规定

B.超过规定时速50%

C.造成交通事故后逃逸

D.驾车没带驾驶证

题型:解答题

指出不属于绿风内障的伴随症状:

A.头眼剧痛

B.虹视

C.恶心呕吐

D.不思饮食

E.发病缓慢

题型:解答题

行扫描电路的作用与性能要求?

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