将标准状况下的某气体(摩尔质量为M g/mol)溶于a g水中,所得溶液的密度为

题型:选择题

问题:

将标准状况下的某气体(摩尔质量为M g/mol)溶于a g水中,所得溶液的密度为b g/cm3,物质的量浓度为c mol/L,则溶入水中的该气体体积是(  )

A.L

B.L

C.L

D.L

考点:物质的量
题型:选择题

杭州在台北的(  )

A.东南方向

B.西北方向

C.东北方向

D.西南方向

题型:选择题

阅读短文,选择正确答案。

      Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable

(一次性的) toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don't have

to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some

hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use less

disposable things.

      Many disposable things are made of plastic. People throw them away after only using them once. It is a

waste of natural resources and is very bad for the environment. Do you know, one Chinese person makes as

much as 400kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw

away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take

between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel,

bring your own things and use them again and again.

      Back at home and school, you can also do something to make our world a better place. Try to do these

things in your daily life: Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let

it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen (食堂), use your

own bowl and chopsticks instead of disposable ones.

1. Why do many hotels provide guests with some disposable things? [ ]

A. Let their guests be convenient during their travelling.

B. Hope their guests use less disposable things.

C. Wish their guests to save money.

D. Want their guests to use more disposable things.

2. Some Beijing hotels will no longer provide guests with            . [ ]

A. cheap food and drink

B. disposable things

C. good service

D. free TV programmes

3. Which of the following is NOT true? [ ]

A. Many disposable things are made of plastic.

B. Throwing disposable things away is a waste of natural resources.

C. Plastic is very bad for the environment.

D. Plastic breaks down easily.

4. What can we do to make our world a better place at home and school? [ ]

A. Use shopping bags made of plastic.

B. Do not throw away paper cups.

C. Use disposable plates, bowls and chopsticks.

D. Do not forget to reuse daily necessities.

5. We can tell from the story that            . [ ]

A. people don't like disposable things at all

B. we can't use paper or plastic bowls at school

C. we should use less plastic things and protect our environment

D. hotels won't provide disposable things because they want to save money

题型:选择题

某公司是一家大型的房地产企业。公司下设多家子公司,涵盖了多个城市多种房产的建造和销售。近年来由于市场竞争激烈,土地价格不断上升,房产建造成本也不断提高。为了保证充足的资金流,企业决定将盈利项目重组到一个子公司名下,并实现了在香港上市。同时,公司分别收购了几家房地产租赁子公司、建筑公司,以与其房产开发和销售配套,实现纵向一体化,实现经济利益最大化的目的。不过,由于该公司在房地产开发市场上所占市场份额较高,政府正对其收购行为进行审查,以免其造成垄断。此外,公司还专门成立财务管理子公司,专门进行投资。通过收购商业银行和其他金融机构股份,公司进入迅速成长的金融服务行业。经过几年发展,该公司在金融领域已经涵盖了银行、保险、证券、信托、财务公司等业务。金融业本身良好的资金流动性,加上产融结合为公司的资金链加入润滑剂,为公司冲击世界领先企业提供了强劲的资金动力。

该公司对房地产租赁企业、建筑公司的收购行为属于( )。

A.横向兼并

B.纵向兼并

C.混合兼并

D.接收兼并

题型:选择题

资产负债(综合)管理的核心是()。

A.资本充足率

B.流动比率

C.净利差

D.资产负债比

题型:选择题

当用蒸馏法测油中水分时,在蒸馏瓶中加一些碎瓷片是为了()。

A.防止瀑沸

B.加快水分挥发

C.防止烧瓶破裂

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