穿墙套管绝缘电阻交接试验主绝缘绝缘电阻不低于()兆欧。 A.100 B.1000 C

题型:单项选择题

问题:

穿墙套管绝缘电阻交接试验主绝缘绝缘电阻不低于()兆欧。

A.100

B.1000

C.2000

D.10000

考点:变电五通考试变电五通考试题库
题型:单项选择题

用“”“ ”分别表示不同种类的原子。下图所示的微观示意图中可以表示化合物的是 [ ]

A.

B.

C.

D.

题型:单项选择题
图上距离是2.4厘米,实际距离是1.2毫米;这幅图的比例尺是(  )
A.1:20B.2:1C.20:1
题型:单项选择题

一般来说,各种教学法既有启发性质,是一把“双刃剑”()

题型:单项选择题

“Cool”is a word with many meanings.Its old meaning is used to express a temperature that is a little bit cold.As the world has changed,the word has had many different meaning.

“Cool”can be used to express feelings of interest in almost anything.

When you see a famous car in the street,maybe you will say,“It's cool.”You may think,“He's so cool,”when you see your favorite footballer.

We all maximize(扩大) the meaning of“cool”.You can use it instead of many words such as “new” or “surprising”.Here's an interesting story we can use to show the way the word is used.A teacher asked her students to write about the waterfall(瀑布)they had visited.On one student's paper was Just the one sentence,“It's so cool.Maybe he thought it was the best way to show what he saw and felt.

But the story also shows a scarcity(缺乏)of words.Without “cool”,some people have no words to show the same meaning.So it is quite important to keep some credibility(可信性).Can you think of many other words that make your life as colourful as the word “cool”? I can.And I think they are also very cool.

小题1:We know that the word "cool" has had ________.

A.only one meaning

B.no meanings

C.many different meanings

D.the same meaning小题2:In the passage,the word“express” means“________”.

A.see

B.show

C.know

D.feel小题3:If you are _______ something,you may say,“It’s cool.”

A.interested in

B.angry about

C.afraid of

D.unhappy with小题4:In the passage,the writer suggests(暗示)that the word “cool”________.

A.can be used instead of many words

B.usually means something interesting

C.can make your life colorful

D.may not be as cool as it seems

题型:单项选择题

常规起动机有哪几部分构成()

A.电动机

B.电磁开关

C.传动机构

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