在一支25 mL的酸式滴定管中盛入0.1 mol·L-1 HCl溶液,其液面恰好

题型:选择题

问题:

在一支25 mL的酸式滴定管中盛入0.1 mol·L-1 HCl溶液,其液面恰好在5 mL刻度处,若把滴定管中的溶液全部放入烧杯中,然后以0.1 mol·L-1 NaOH溶液进行中和,则所需NaOH溶液的体积 [ ]

A.大于20 mL

B.小于20 mL

C.等于20 mL

D.等于5 mL

考点:基本仪器的使用
题型:选择题

脊髓灰质炎病毒属于下列哪一科的病毒().

A.弹状病毒科

B.呼吸孤病毒科

C.小RNA病毒科

D.正黏病毒科

E.副黏病毒科

题型:选择题

抗震救灾中,解放军利用直升飞机向灾区空投救灾物资,救灾物资在下落过程中(不计空气阻力)受______________作用,方向是________________

题型:选择题

纳税人是国家行使课税权所指向的单位和个人,即税法规定的直接负有纳税义务的单位和个人。( )

题型:选择题

Make a five-minute film and win !

Do you love the summer holidays but hate being bored ? Then why don’t you enter the Film Street Summer Shorts Competition by making a short film this summer 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 Cinemas 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 kid’s name or address

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

◆   We can’t show films that have bad language .

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 someone else .

◆   There are no scenes of branding (商标) on shop sights , books , magazines or CDs .

◆   There are no scenes of someone else’s artwork

Address and Date

Post your finished film on tape , CD or DVD by Monday , October 1st , 2007 to :

Film Street Summer Shorts Competition

First Light Movies

Unit 6 , Third Floor , The Bond

180-182 Fazeley Street

Birmingham    B5   5SE

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

小题1:Who is the passage written for ?

A.Children

B.Parents

C.Teachers

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

A.One

B.Two

C.Three

D.Four小题3: From the third paragraph we can learn that _________ .

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

B.the competition is held by Cineworld Cinemas

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 closest in meaning to “ ____________ “ .

A.interesting enough

B.full of exciting moments

C.good for children

D.made by yourself

题型:选择题

下列参数,频谱多普勒不能直接测量的是()。

A.收缩期峰值速度

B.舒张期最低速度

C.全心动周期时间

D.搏动指数

E.血流速度时间积分(VTI)

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