( 2010·全国卷Ⅱ·16)如图,一绝热容器被隔板K 隔开a 、 b两部分。已

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问题:

( 2010·全国卷Ⅱ·16)如图,一绝热容器被隔板K 隔开a 、 b两部分。已知a内有一定量的稀薄气体,b内为真空,抽开隔板K后a内气体进入b,最终达到平衡状态。在此过程中

A.气体对外界做功,内能减少

B.气体不做功,内能不变

C.气体压强变小,温度降低

D.气体压强变小,温度不变

考点:理想气体状态方程
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供应链是围绕(),通过对信息流、物流、资金流的控制,从采购原材料开始,制成中间产品以及最终产品,最后由销售网络把产品送到消费者手中的将供应商、制造商、分销商、零售商、直到最终用户连成一个整体的功能网链结构模式。

A.核心企业

B.供应商

C.重要伙伴

D.消费群体

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阅读理解。

     We all know that as the population of a city grows, so do its problems.

Pollution,  too  many cars, and crowded streets are just a  few of these

difficulties.  One way to help with these problems is city trains. Trains

traveling to different parts of a city means fewer cars and buses on our roads, cleaner air, and more open streets. In recent years, cities such as Guangzhou, Shenzhen and Shanghai have all built city train lines.

     The first city train line in China was built in Beijing. The oldest part of the train line, from Beijing Stop to Pingguoyuan, was opened in 1969.  Its length was 23.6 kilometres. As the city grew after 1980, so did the need for more

trains.A newer train line was built to help move people around the city centre. The 16-kilometre-long "circle line" was finished in 1987. Since that time

even more train stations have been built and today the train lines in the city

are over 50 kilometres long.

    For  the  coming beautiful  future,  the trains of Beijing will be very

important.  We all know that most of the people who go to work or go to

school will travel by train.  

1. Trains traveling to different parts of a city means____cars and buses on

our roads.

A. lots of          

B.little        

C.fewer        

D.less

2. The passage tells us about

A. the problems in big cities              

B.city trains

C. the history of Beijing                

D.2008 0lympic Games

3. How long was the first train line in Beijing?

A. About 16 kms.    

B.About 23 kms.    

C.About 33 kms.    

D.About 50 kms.

4. The 16-kilometre-long "circle line" was finished in____.

A. 1969          

B.1967            

C.1980            

D.1987

5.  Which of the followings is TRUE?

A. Bigger population, nlore problems.

B. The ldrger population a city has, the fewer problems it f'aces.

C. More ca.nd more cities are building undergrouml.s for the 2008 Olympic Games.

D. There are 20 stations on the "circle line" in Beijing.

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小明在化学课上记录了许多化学符号及含义,其中准确无误的是(  )

A.氦气:Ha

B.2个氮分子:2N

C.氧化铝:Al2O3

D.两个氧元素:2O

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下列编制工程量清单其他项目费报价的做法,正确的有()

A.暂列金额按招标人在其他项目清单中列出的金额填写 

B.材料暂估价由投标人根据实际情况自主确定 

C.专业工程暂估价由投标人根据施工组织设计或施工方案自主确定 

D.总承包服务费由投标人根据招标文件中列出的内容和提出的要求自主确定 

E.计日工按招标人在其他项目清单中列出的项目和数量,由投标人自主确定综合单价并计算计日工费用

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十二经别的循行特点可概括为()

A.升降出入

B.出入往复

C.出入注泄

D.离合出入

E.开合枢

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