某温度下,在一固定容积的容器中进行反应H2(g)+I2(g)2HI(g),下列情

题型:选择题

问题:

某温度下,在一固定容积的容器中进行反应H2(g)+I2(g)2HI(g),下列情况一定能说明反应已达到限度的是(    )

A.压强不再随时间而改变时

B.气体的总质量不再改变时

C.混合气体中各组成成分的含量不再改变时

D.单位时间内每消耗1 mol I2,同时有2 mol HI生成时

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

胸片上,肺内网状、蜂窝状阴影多见于()

A.间质性肺炎

B.尘肺

C.含铁血黄素沉着病

D.间质纤维化

E.急性粟粒型肺结核

题型:选择题

Here is a poster on a middle school web site. Read the web-site poster. Then do Numbers 1 to 4.

Going, Going, Gone!

The Haynes Middle School Parent—Teacher Organization

invites you to attend our latest fund(基金)-raiser,

The Fourth Annual(每年一次的) Haynes School Auction(拍卖)!

Saturday, May 10

6:00 pm — 11:00 pm 

in the school hall

6:00 pm — 6:30 pm: All items for auction are previewed.

6:30 pm — 7:00 pm: Silent auction begins.

7:00 pm — 7:30 pm: Highest bidders(出价人) from silent auction are determined.

7:30 pm — 11:00 pm: Main auction begins.

Items up for bid in the silent auction range in value from $ 5.00 to $ 30.00.

Items up for bid in the main auction include the following:

●Airline tickets to a place of your choice

●Weekend getaways at first-class hotels

●Season tickets to the Chicago Bears football game

●$ 50 gift tickets to local gift shops, restaurants, and salons

●Theater tickets to The Merchant of Venice

Don’t miss the boat! Book your tickets today.

Last year, tickets sold out in five days!

Tickets are sold on a first-come, first-served basis.

$ 15.00 per person

All the money from the auction will be given to the Haynes School computer lab.

小题1: Which of the following is not mentioned as being up for bid at the auction?

A.A movie pass to the local cinema.

B.A weekend stay at a hotel.

C.A ticket to a restaurant.

D.Airline tickets.小题2:The more items that are given or bought for auction, _______.

A.the less money that will be charged for the tickets to the auction

B.the more money that can be raised to support the computer lab

C.the faster the ticket will be sold to the auction

D.the higher the value that will be placed on the items in the silent auction小题3:Which of the following is most likely to happen at the year’s auction?

A.The airline tickets will receive higher bids than any other item.

B.All items up for bid will be sold for at least twice their value.

C.More money will be raised this year than in any other year before.

D.Tickets for the event will be sold out in less than one week.小题4:The phrase “first-come, first-served” tells you that _______.

A.people can buy the tickets on the first day only

B.the person who is first to arrive will receive a ticket at no charge

C.food and drinks will be served at the auction

D.tickets are sold in the order of who arrives first to buy them

题型:选择题

伽利略的国籍是()。

A.美国

B.德国

C.荷兰

D.意大利

题型:选择题

能够解释为什么在零售商业物业内聚集着很多出售同种或者类似商品的零售店的理论是( )。

A.中心地理沦
B.同类零售店聚集理论
C.需求的外部效应理论
D.级差地租理论

题型:选择题

观览车的运转形式是()。

A、绕水平轴转动;

B、往复摆动;

C、沿架空轨道运行;

D、回转和升降。

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