在一定温度下,将等量的气体分别通入起始体积相同的密闭容器I(恒容)和Ⅱ(恒压)中

题型:选择题

问题:

在一定温度下,将等量的气体分别通入起始体积相同的密闭容器I(恒容)和Ⅱ(恒压)中,使其发生反应,t。时容器I中达到化学平衡,x、Y、z的物质的量的变化如图所示,则下列有关推断正确的是

A.该反应的化学方程式为

B.若两容器中均达到平衡后,两容器的体积V(I)<V(Ⅱ),则容器Ⅱ达到平衡所用时间小于t。

C.若两容器中均达到平衡时,两容器中Z的物质的量分数相同,则Y为固态或液态

D.达平衡后,若对容器Ⅱ升高温度时其体积增大,说明Z发生的反应为吸热反应

考点:化学平衡的有关计算影响化学平衡的因素达到化学平衡的标志化学平衡常数
题型:选择题

Have you got a Facebook account? Are you thinking of getting one? Jamie Simmonds has just signed up. Let's see how she's getting along.

My Diary

MONDAY: I'm officially a Facebooker. I find a few people I used to know and I've soon got seven friends. I've never felt so popular! I wonder if my old university flatmate Steve is on here…What do you know! He is! Maybe Facebook has its uses.

TUESDAY: I've received lots of nice welcoming messages on my wall. Later, I meet up with Steve for a drink after not seeing him for five years. We get on really well! Then, he uses his Facebook app for iPhone to suggest me as a friend to some other former classmates. Some of them even come to the pub and it's just like old times – possibly a bit too much like old times. During the night, photos are uploaded to Facebook.

WEDNESDAY: Disaster! My mum's on Facebook! Has she seen the photos of me dancing on the table last night? Has she shown them to dad? Oh. And I have a friend request – mum again!

THURSDAY: There's a message from my boyfriend, “so, it's over then, is it?” Obviously I haven't changed my settings to show I'm “in a relationship”, and I haven't even added him as a friend. Ah, well, I wonder what my ex-boyfriend is doing… Whoops! I accidentally type his name into my status box instead of the search  and now every one can see it on their news feed.

FRIDAY: Time to update my status: “Work is boring. Can't wait for the weekend!” Oh, look, I've received a comment! Someone must feel the same way. Lots of my friends now “like” this status.

SATURDAY: Good news! I've got 100 friends. But wait! Someone has “un-friended” me! I look through my “friend list” to try to work out who it was. Why did they do that? Am I really such a terrible person? I never knew Facebook could be this cruel.

SUNDAY: Wake up. Check my Facebook page. Make coffee. Check my Facebook page again. Get ready to leave. Change my mind and check my Facebook page … again. I am becoming addicted to it! I think it's time to end it all before it takes over my life. I delete my account. Back to good, old, simple e-mails. Oh, look, I've got a message: A friend invited you to join Twitter. . .  

In July 2010, Facebook had more than 500 million active users. The average Facebook user has 130 friends. Facebook is translated into more than 70 different languages. The world spends 700 billion minutes a month on Facebook. Facebook creator Mark Zuckerberg's Facebook page says he's a Harvard graduate, even though he actually dropped out to focus on Facebook. The site is valued at between $7.9 and $11 billion.

小题1:Why did Jamie's boyfriend ask her whether she had broken up with him?

A.He had seen photos of Jamie dancing on the table.

B.She showed in her Facebook that she was still not dating anyone.

C.Her boyfriend was angry that she refused to add him as her friend.

D.He saw the name of her ex-boyfriend on his news feed.小题2:Which of the following is expressed in this article?

A.Visiting Facebook website took up a large part of Jamie's time and energy.

B.Jamie is enthusiastic about her present job.

C.Facebook was created by a Harvard graduate, Mark Zuckerberg.

D.Compared with Facebook, Twitter is a better choice for Jamie.小题3:What does the word “un-friend” mean in “Someone has ‘un-friended' me!”?

A.Being unfriendly to others.

B.Having a quarrel with somebody.

C.Removing a name from the friend list.

D.Ending friendship with somebody.小题4:Which of the following is true according to the passage ?

A.Steve was Jamie's boyfriend in the university.

B.People all over the world spend 700 billion minutes a week on Facebook.

C.Jamie's mother saw her dancing on the table last night.

D.Jamie felt enthusiastic about Facebook at first.小题5:It can be learned from the passage that the writer's attitude towards Facebook is _________  .

A.subjective

B.objective

C.negative

D.positive

题型:选择题

常规咽部CT扫描要求病人做到()

A.平静呼吸状态

B.呼气后屏气

C.鼓气状态

D.发“E”音状态

E.吸气后屏气

题型:选择题

哪一项属于Ⅰa类钠通道阻滞剂

A.奎尼丁 普鲁卡因胺
B.利多卡因 苯妥英钠
C.索他洛尔 胺碘酮
D.普萘洛尔 比索洛尔
E.奎尼丁 利多卡因

题型:选择题

驾驶机动车有下列()行为的,不适用“责令改正,处警告或者二百元罚款”的规定。

A.载人超过核定人数的

B.按规定使用灯光、警报器、标志灯具的

C.饮酒后驾驶机动车的

D.违反禁令标志、禁止标线指示的

题型:选择题

感觉身体给你的反馈,不要强迫自己过度的拉伸肌肉和()。

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