(1)请结合碳元素的原子结构特点及成键特征分析,含n个碳原子的烷烃中,碳原子间共

题型:填空题

问题:

(1)请结合碳元素的原子结构特点及成键特征分析,含n个碳原子的烷烃中,碳原子间共用电子对数为

________,结合的氢原子数为________。

(2)烃分子中失去一个或几个氢原子后剩余的部分叫烃基,如:CH4→ -CH3+·H

试写出以下粒子的电子式,并分析其存在情况。

NH4+________,H2O________,-CH3________,-CH2-________,-CH2-CH3________

考点:电子式的书写共价键
题型:填空题

阅读理解。

      Mr King goes to a dinner party. He is wearing old clothes. He comes into the room. But people

in the room don't look at him. They don't ask him to sit at the table. Mr King goes home and puts on

(穿上) his good clothes. He goes back to the party. Everyone in the room stands up and smiles (微笑)

at him. They give him very good food to cat. Mr King takes off (脱下) his clothes, and puts them in the

food and says, "Eat, clothes!" The other people ask, "What are you doing?" He answers, "I'm asking my

coat to eat food. I am wearing my old clothes. You don't look at me. You don't ask me to sit down.

Now I'm in these clothes. And you give me very good food.  Now I see. you. give the food to my

clothes, not to me ! "

1. Mr King goes to a _____.        

A. birthday party              

B. dinner party

C. evening party              

D. welcome party

2. Mr King goes home to _____ his _____clothes.          

A. put on, good              

B. puts on, fine

C. take off, good            

D. wear, good

3. Mr King goes back to the party with _____.          

A. his old clothes                  

B. a very good car

C. his good clothes                

D. a good watch

4. Mr King takes off his good clothes, and _____ them _____the good food.          

A. ask, to eat                      

B. asks, to eat

C. lets, to eat                      

D. ask, eat

5. Mr King says the good food is _____.         

A. for him                        

B. for his good clothes

C. for me                        

D. for his money

题型:填空题

下列符合子宫脱垂Ⅲ度重型的是()。

A.子宫颈距处女膜缘少于4cm,但未达处女膜缘

B.子宫颈已达处女膜缘,但未超过该缘,检查时可见子宫颈

C.子宫颈脱出于 * * 口外,但子宫体在 * * 内

D.子宫颈及部分子宫体已脱出 * * 口外

E.子宫颈及子宫全部脱出于 * * 口

题型:填空题

电解水制取氢气是目前获得氢气的方法之一.计算要获得20g氢气至少需要电解多少克水?

题型:填空题

表达实体之间逻辑联系的E-R模型,是数据库的()。

A.概念模型

B.逻辑模型

C.外部模型

D.物理模型

题型:填空题

某公司为增值税一般纳税人,主要生产各种电动工具,适用的增值税税率为17%。增值税以1个月为一个纳税期,自期满之日起15日内申报纳税,增值税专用发票通过防伪税控系统开具。2009年7月10日该公司申报缴纳6月份增值税税款100万元。7月底,税务机关对该公司6月份增值税计算缴纳情况进行专项检查,有关检查情况如下:
(1)6月6日,一批外购钢材因管理不善被盗,增值税专用发票确认的成本为40万元,增值税税额为6.8万元。在查明原因之前,该公司将40万元作为待处理财产损溢入账。
(2)6月10日,处理一批下脚料,将取得的含增值税销售额3.51万元全部确认为其他业务收入。
(3)6月15日,购进低值易耗品一批,取得承运公司开具的运输发票上注明的运费金额为1万元。该公司计算抵扣的进项税额为0.1万元。
要求:根据以上事实及《合同法》的规定,回答下列问题:
(1)该公司将被盗钢材40万元成本作为待处理财产损溢入账是否正确说明理由。
(2)该公司将下脚料含税销售额全部确认为其他业务收入的处理是否正确说明理由。
(3)该公司购进低值易耗品发生的运费抵扣进项税额的计算是否正确说明理由。
(4)计算该公司应补缴的增值税。

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