如图所示,让平行板电容器带电后,静电计的指针保持一定角度.若减小两极板间的距离,

题型:选择题

问题:

如图所示,让平行板电容器带电后,静电计的指针保持一定角度.若减小两极板间的距离,同时在两极板间插入电介质,那么静电计指针的偏转角度

A.一定减小

B.一定增大

C.一定不变

D.可能不变

考点:电容器的概念和原理
题型:选择题
书面表达
假设你是珍妮,中考后你将参加赴英国的“名校之行”夏令营活动。请你根据以下表格提供的信息准备一篇在开营仪式的自我介绍发言稿。
注意:1.、词数:60-80左右。2、发言稿的开头和结尾已给出,不计入总词数。3、可根据内容适当发挥。
Name
 Age
Free time activities
Future job
Hope
Favorite subject
 
Jenny
 
15
draw pictures of animals
enjoy the singing of birds in nature listen to music
read English books…
 
teacher
 
make good friends

 
English
Dear Friend,
I’m very happy to be in this Summer Camp to know about the famous universities in London.I’m glad to introuduce myself to you.                                         
                                                                              
                                                                              
                                                                              
That’s all.Thank you for listening.
题型:选择题

选词填空,每空一词(5分)

小题1:My ___________ ( name / name’s) Tom.

小题2:______________ ( She / Her ) is my mother.

小题3:That’s ______________(a / an )alarm clock.

小题4:I have three _______________ ( ruler / rulers ).

小题5:Excuse ______________ ( I / me ). Is it your book?

题型:选择题

根据括号内的汉语提示,完成句子(每空一词)。

1. We should take good care of             (自己) while our parents are away.

2. I am looking forward to             (收到) the letters from the children in Yushu disaster area.

3. Millions of football fans enjoy             (观看) the World Cup in South Africa this summer.

4. There are 56             (民族) in China.We are like a big family.

5. Low-carbon is a popular word nowadays. We should make a great contribution to             

    (保护) the environment.

6. Li Weikang is a top student in our school. He is             (被期望) to enter Huanggang High

    School this term.

题型:选择题


以下提供若干个案例,每个案例下设若干道考题。请根据案例所提供的信息,在每一道考试题下面的A,B、C、D、E五个备选答案中选择一个最佳答案。

某工人从事开山凿岩的野外工作.工龄1年半,近来经常出现胸闷,气短。咳嗽,平时无吸烟习惯。

目前诊断矽肺分期的最主要依据是

A.接触矽尘职业史

B.临床症状和体征

C.化验检查结果

D.X线胸片检查所见

E.肺功能测定结果

题型:选择题

材料的抗渗等级为W4,表示试件抵抗静水水压力的能力为()MPa。

A.0.4

B.4

C.40

D.400

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