题干

一个物体在空气中用弹簧测力计称得重3N,将其全部浸没在水中用弹簧测力计称,示数为2N,则该物体的体积为 ____  ,密度为 ____  。

上一题 下一题 0.0难度 选择题 更新时间:2017-09-09 11:12:08

答案(点此获取答案解析)

1×10﹣4m3,3×103kg/m3

同类题1

     A 14-year-old British student is packing for the next day of school: textbooks, notebooks, pens, 250 grams of flour, an egg and some cooking oil. Wait, what? It's not a joke.
      From September, cookery will be a compulsory (必修的) course for kids aged 7-14 in the UK.Primary school students will learn how to put things together and make simple, healthy food.
     At high school, students will then master a number of different meals. They will also learn some cooking skills including baking.
Britain is sometimes known as a country with bad food and unhealthy eating habits. These new courses are part of the country’s effort to bring healthy food back onto the table.
     “One in four British families no longer has a table that everyone can eat around. One out of every two meals we eat is eaten alone. Only four out of ten of us enjoy eating meals with our children,” British writer Joanna Blythman wrote in her book Bad Food Britain: How A Nation Ruined Its Appetite (食欲) in 2006.
     Instead, ready meals have become the first choice for many British kids, because their parents are often too busy to cook a proper meal.
The Department for Education hopes that the cookery courses can introduce children to good food and reduce childhood obesity.
“It's important that children can develop an interest and understanding of good food,” said a spokesman for the department.
    “We want to encourage them to develop a love of food and cooking that will stay with them as they grow up.

同类题5

D)阅读短文,然后完成内容摘要。每空不超过三个单词。

    Maciek Czastka was born in Lodz, Poland. He came to China several years ago. So far, he has been working in Chengdu for three years.


    "TheBelt and Road Initiative(一带一路的倡议) is meaningful," he said. "Thanks to it, we are offered more chances." The most powerful support for Chengdu to thrive(兴盛) along the Belt and Road is the Chengdu-Europe express railway( 高速铁路). It provides direct train services between Chengdu and the city of Lodz.

    Because of the express railway, trains can bring things from China to Europe. At the same time, they can bring back European food, wine, meat and so on. In 2016, a total of 460 trains ran between Chengdu and Europe. The number is expected to grow to 1,000 this year.

    Since the Chengdu-Lodz express railway was opened, Chengdu, together with other cities in west China, has developed close trade ties with the European country. Poland is one of the largest apple producers in Europe. Czastka's company helps farmers in Poland sell their apples to China. More and more European products will be sent to China in the future.

The Belt and Road Initiative is meaning

About Maciek Czastka

◆Born:____ 

◆Workplace: In Chengdu

◆Working in Chengdu: Since____ago

The most powerful support for Chengdu

It's the Chengdu-Europe express railway. In 2016, a total of____trains  ran between Chengdu and Europe. This year it will grow to 1,000.

The advantages of “the Chengdu-Europe

express railway”

1). The Chengdu-Europe express railway provides ____between Chengdu and the city of Lodz.

2). Chengdu , together with other cities in west china , has developed____with the European country.