关闭水泵的出口阀门,阀的阻力就会()A、变大 B、变小 C、不变

题型:单项选择题

问题:

关闭水泵的出口阀门,阀的阻力就会()

A、变大

B、变小

C、不变

考点:运转工考试运转工考试题库
题型:单项选择题

实验室规定:

(1)不能用______接触药品,不要把______凑到容器口去闻药品(特别是气体)的气味,不得______任何药品的味道.

(2)注意节约药品,应该严格按照实验规定的用量取用药品,如果没有说明用量,一般应该按最少量取用,液体取______mL,固体只需______.

题型:单项选择题

在实验室里常用______直接测物体的质量;在生活实际中用______测物体的冷热程度;在家庭电路中用______测量消耗的电能.

题型:单项选择题

Changsha,

Hunan Province

May 6, 2010

Dear editor,

Under China’s current educational system, there are those who do nothing but study. They of course are thought to be model students.

But I feel that there is another type of student who, perhaps not as diligent (勤奋的) as the first type, uses his time more efficiently and achieves a lot academically.

Last year, a classmate of mine was accepted by a top university. It surprised all of us. It was because, unlike most of us, he didn’t spend too much of his time studying.

When I asked him the secret of his success, he said that the key was properly and scientifically arranging his time.

“ I spent a lot of time keeping fit and as a result, I was able to better concentrate (集中) on my class work.”

The moral of the story is: it isn’t necessary to sit at your desk all day long to get high academic (学术) grades.

Yours,

Zhang Zishu

小题1:What does the letter-writer (a reader) think leads to the fact that many students do nothing but study?

A.The present educational system.

B. People’s old ideas.

C.The teaching methods.

D.The parents of these students.小题2:It seems that this reader thinks        .

A.the first type of student is our model

B.the second type of students is our model

C.both types of students are worth learning from

D.neither of the two types of students are good小题3: The secret of his classmate’s success was        .

A.properly and scientifically arranging his time

B.spending a lot of time studying

C.doing nothing but studying

D.playing all the time小题4: The reader wrote the letter in order to        .

A.call on us to work even harder

B.cause people to think about how to study more efficiently

C.advise people to do research into his classmate’s success

D.criticize (批评) China’s educational system小题5:What would be the best to stand for the letter-writer’s opinion?

A.Secret of success.

B.China’s educational system needs changing.

C.Work while you work and play while you play.

D.Keep fit first.

题型:单项选择题

老李是一位杰出的教育工作者,他是一名颇有实力的心理学家。因而 ( )。

A.老李是个教授

B.老李既是教育工作者,又是心理学家

C.老李是心理学家

D.老李除此之外什么都不是

题型:单项选择题

施工企业安监部门的职责是什么?

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