简述直流电加热电动机的干燥方法?

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问题:

简述直流电加热电动机的干燥方法?

考点:电力生产“1000个为什么”电气运行与检修电气运行与检修题库
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Most Americans enjoy moving from place to place. For example, they often drive their cars 120 to 160 kilometres away just to have dinner with a friend or even fly to London or Paris just to watch a football match. In some states only one person in five lives in a place for more than five years. One may be born in one city, and go to school in another. He may finish his middle school in two or three cities, and then go to college far across the country. When he begins to work, he may possibly move from job to job. Moving from one job to another, which is called “job-hopping”, can be seen in many places in the United States.

Job-hopping does good to workers because every change of a job gives them a chance to get better pay. And job-hopping also gives bosses the chance to get new ideas and skills from him or her.

小题1:From this passage, we can see Americans often travel to _______________.

A.have dinner with their friends

B.go shopping

C.watch a football game

D.enjoy themselves小题2:Which of the following is true?

A.About 20% of the people stay in one place for over five years.

B.Children have to finish middle school in one place.

C.People go to the nearest college.

D.When people begin to work, they don’t move any more.小题3:Job-hopping means “_______________”.

A.looking for a job

B.having a job

C.changing jobs often

D.losing a job小题4:In the USA job-hopping _______________.

A.is very popular

B.helps young people go to college

C.helps workers in traveling

D.helps students begin to work小题5:The writer thinks job-hopping _______________.

A.does good only to the workers

B.does good only to the boss

C.must be stopped

D.is helpful

题型:问答题 简答题

对于数据3,3,2,3,6,3,10,3,6,3,2,以下结论正确的个数是

①这组数据的众数是3;    ②这组数据的众数与中位数不同;    

③这组数据的中位数与平均数相同;    ④这组数据的众数与平均数相同。[ ]

A.1

B.2

C.3

D.4

题型:问答题 简答题

通常锅炉夏季上水时间约为2—3h,冬季上水时间约为4—5h。

题型:问答题 简答题

下面程序的执行结果是
#include"iostream.h"
void main()
int * p,r;
p=new int;
*p=20;
r=sizeof(*p);
cout<<r<<endl;
delete p;

A.程序错误

B.内存为20地址的大小

C.20

D.4

题型:问答题 简答题

按照《塔里木油田钻井井控实施细则》规定:含H2S地区井的营房摆放应距井口()m以远,避开低洼处,并处于季节风的上风或侧风方向。

A.300

B.400

C.500

D.600

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