图一为呼吸系统的组成示意图,图二为肺泡与毛细血管之间的气体交换示意图,请根据图回

题型:实验题

问题:

图一为呼吸系统的组成示意图,图二为肺泡与毛细血管之间的气体交换示意图,请根据图回答下列问题。

(1)人体进行呼吸的主要器官是图一中的【 】     ,【 】     不仅是气体交换的通道,而且还能使到达肺部的气体温暖、湿润和        

(2)图二所示的肺泡壁和毛细血管壁都是由     层扁平上皮细胞构成,这有利于            

(3)图二中的a代表的物质是       ,血液从毛细血管的【 4 】流到【5】端后,其成分变化是        含量增加。

(4)图二所示的外界气体按照c方向进入肺泡时,图一中【 3 】     应处于    

    状态。

考点:演示实验:模拟膈肌的运动呼吸系统的组成和功能肺与外界的气体交换
题型:实验题

下列关于电势和电势能的说法中正确是(  )

A.电场中电势高的地方,电荷在该点具有的电势能就大

B.电场中电势高的地方,放在该点的电荷的电荷量越大,它具有的电势能越大

C.电场中的任何一点上,正电荷所具有的电势能一定大于负电荷具有的电势能

D.电势为零的点,任一试探电荷在该点的电势能一定为零

题型:实验题

根据破产法律制度规定,下列选项中,属于破产债权的是()。

A.清算组解除破产企业与他人签订的合同时,破产企业依约应当支付的违约金

B.破产企业在破产宣告前因侵权给他人造成损失而产生的赔偿责任

C.破产企业开办单位对破产企业未收取的管理费

D.破产宣告后的债务利息

题型:实验题

Make a five-minute film and win!

Do you love the winter holidays but hate being bored? Then why don’t you enter the Film Street Summer Shorts Competition by making a short film this winter with your family and friends?

What you have to do

To enter the competition, you have to make a short film that is around 5 minutes long (It can be shorter but not longer!) on a digital camera, or mobile phone.

Awards

The best short film entered into our competition will be shown in Film Street’s Cinema and you’ll win a Cineworld Cinema pass for yourself and three more for other members of your filmmaking crew (演职员)。 If you have a Cineworld Cinema pass, you can watch as many films as you like for a year, for free, at any Cineworld Cinema.

Rules

We can’t show films that tell others about either your or any other kids’ names or addresses.

We can’t show films that hurt, harm or insult (侮辱) other people.

We can’t show films that have bad languages.

Copyright Checklist (版权清单)

Getting permission to use someone else’s work in your film can be expensive, so check your film to make sure that:

Your film is original and you haven’t copied anyone else’s.

There are no scenes of branding on shop signs, books, magazines or CDs.

There are no scenes of anyone else’s artwork.

Address and Date

Post your finished film on tape, CD or DVD by Monday, October 1st, 2011 to:

Film Street Summer Short Competition

First Light Movies

Unit 6, Third Floor, The Bond

180-182 Fazeley Street

Birmingham

So what’s stopping you? Start making your Film Street Summer Short now!

小题1:Who is the passage mainly written for?

A.Students

B.Parents

C.Teachers

D.Actors小题2:How many Cineworld Cinema passes will the winner of the competition be awarded in all?

A.One

B.Two

C.Three

D.Four小题3:From Paragragh 3, we can learn that _______.

A.the winner’s short film can be shown in any cinema

B.the competition is held by Cineworld Cinema

C.the winner can watch films for free for one year at any Cineworld Cinema.\

D.the winner will be paid for his short film小题4:The underlined word “original” is the closest in meaning to “_______”.

A.interesting enough

B.exciting enough

C.good for children

D.made by yourself

题型:实验题

罗兰C发射台间失去同步时,用哪个信号闪烁或跳动报警()。

A.主台信号

B.副台信号

C.副台信号最后一个脉冲

D.主台信号最后一个脉冲

题型:实验题

过滤推动力,通常以作用于悬浮液的压力表示,实际上起推动作用的是滤饼和介质两侧的()。

A、浓度差

B、温度差

C、压强差

D、密度差

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