质量为2kg、底面积为0.01m2的容器放在水平地面上,容器内盛有质量为8kg的

题型:计算题

问题:

 质量为2kg、底面积为0.01m2的容器放在水平地面上,容器内盛有质量为8kg的酒精(酒精密度为0.8×103kg/m3)。求:

(1)酒精的体积V酒精

(2)液面下0.1m处酒精产生的压强P酒精

(3)容器对地面的压强P。

考点:压强的大小及其计算液体压强的计算密度公式的应用
题型:计算题

()是车轮轮辋表面同钢轨接触并在轮面上滚动的部分。

题型:计算题

矿业工程项目招标承包方式的分类包括()。

A.按招标内容划分

B.按承包商所处地位划分

C.按业务承包范围分类

D.按专项招标承包划分

E.按阶段招标承包划分

题型:计算题
Learning to save money when you're young is an important lesson. All good lessons and habits begin early, and saving is a skill that everyone __36__. Many people—adults included—do not have a good __37__ of saving for the long run.
I have been _38__ to learn this lesson early because I have had a grass cutting business since I was 10 years old. 39__ the money I make I spend about 10 percent and save the other 90.
Making sure you save and don't spend too much is a good way to __40__ wealth. I have put my earnings in a bank. Many teens I know spend all the money they earn so it never has a chance to _41__. Young people should __42_ that their teenage years are a great time to begin saving.
If you have a job at high school, you _43__ have fun with some of the money. But you should also save some __44__ it will grow. Then you can begin planning for your future. When you spend money, you not only lose that money, __45__ lose the interest you could have earned by saving it.
After high school, college is __46__, with expenses such as food and rent. If you can  __47__ a good percentage of the money you earn as a teen, going to college and buying a house will be much easier. If you are in your thirties without any savings, you will always have to __48__.
Later in life it can be hard to start saving _49__ general  cost of living is more expensive and you may only have enough to pay your _50__. If you want to buy a house and have a family, you need money to start with, which __51__ saving.
Many say money cannot make you happy, and this is true. But money can help you to lead a __52__ life.
Saving early will mean you will have to work for fewer years when you are older. It will also __53___ you to spend time doing the things that you want to do.__54__, it will mean you can live the way you want to without  55__.
小题1:
A.needsB.likesC.arrangesD.expects
小题2:
A.knowledgeB.experienceC.formD.sense
小题3:
A.foolishB.fundamentalC.luckyD.grateful
小题4:
A.WithB.OfC.InD.From
小题5:
A.divide upB.build upC.keep upD.make up
小题6:
A.breakB.runC.makeD.grow
小题7:
A.recognizeB.realizeC.researchD.doubt
小题8:
A.mustB.dareC.shouldD.may
小题9:
A.so thatB.in caseC.in thatD.but for
小题10:
A.butB.andC.alsoD.or
小题11:
A.expensiveB.cheapC.boringD.bitter
小题12:
A.hold outB.hold upC.hold ontoD.hold back
小题13:
A.surviveB.struggleC.tolerateD.die
小题14:
A.ifB.as long asC.whileD.since
小题15:
A.billsB.taxesC.attentionD.consequences
小题16:
A.results fromB.gets fromC.comes fromD.escapes from
小题17:
A.happyB.simpleC.miserableD.secure
小题18:
A.forbidB.allowC.AdviseD.request
小题19:
A.In additionB.Above allC.On the contraryD.Believe it or not
小题20:
A.consultingB.worryingC.restingD.thinking
题型:计算题

下面是某学校校长的讲话内容,请回答后面的问题.

  现在我们是八年级的学生了。在学习中,老师们的辅导越来越勤了,同学们的学习也越来越紧张了。据反映,有一部分同学每晚在熄灯就寝后读书做练习直到11点钟,这种精神是可贵的。但也有老师反映相当一部分同学课堂上精神不振,恹恹欲睡,课堂学习效率明显降低了。

(1)校长肯定的是和否定的各是什么?

______________________________________________________________

(2)校长讲话的目的是什么?

______________________________________________________________

题型:计算题

下列何种疾病为新生儿特有的肠道炎症()

A.节段性肠炎

B.小肠结肠炎

C.急性出血性坏死性小肠结肠炎

D.秋季腹泻

E.坏死性小肠结肠炎

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