在下列各项中,属于减小摩擦的措施是( ) A.自行车刹闸时,闸皮紧压在车的钢圈上

题型:选择题

问题:

在下列各项中,属于减小摩擦的措施是(  )

A.自行车刹闸时,闸皮紧压在车的钢圈上

B.冬天,在结冰的地面上撒沙子

C.旅行箱下装有小轮子

D.鞋底上有高低不平的花纹

考点:增大或减小摩擦的方法
题型:选择题

Peter's uncle lived in the country. Once Peter went to stay with him for a few weeks. When they went for a walk or for a drive in the car and they passed somebody ,his uncle waved. Peter was surprised and said, “Uncle George, you know everybody here. Where did you meet them all?”

“I don't know all these people,” said his uncle                

“Then why do you wave to them?” asked Peter.                 

“Well, Peter,” answered his uncle, “when I wave to someone and he knows me, he is happy. He goes on his journey with a happier heart. But when I wave to some one and he doesn't know me, he is surprised and says to himself, ‘Who is that man? Why did he wave to me?’ So he has something to think about during the rest of his journey, and that makes his journey seem shorter. So I make everyone happy.

小题1:Peter was surprised that his uncle _______

A.waved to everybody they passed

B.knew everybody there

C.said hello to everyone

D.didn't know all the people they passed小题2:“I don't know all these people” means ________.

A.I know none of these people

B.I know some of these people

C.I don't know any of these people

D.I know most of these people小题3:When Uncle George waved to his friends, they became ________.

A.worried

B.happy

C.sad

D.surprised小题4:Some people didn't know Uncle George. When he waved to them, they ________.

A.became angry with him

B.thought that he must be a friend

C.thought why he was waving to them

D.didn't look at him小题5:Uncle George waved to everyone so that ________.

A.he could make some more friends

B.he could surprise everyone

C.everyone would remember him

D.he would make everyone happy

题型:选择题

何谓预激综合征,有哪几种类型?

题型:选择题

执行以下程序后,输出“#”的个数是 【13】
#include <stdio.h>
main()
int i,j;
for(i=1;i<5;i++)
for(j=2;j<=i;j++) putchar(’#’);

题型:选择题

呼吸衰竭时,呼吸器使用不当可发生()

A.呼吸性碱中毒

B.气胸

C.上消化道出血

D.呼吸机相关性肺炎

E.加重二氧化碳潴留

题型:选择题

2014年2月,某市财政局派出检查组对某国有外贸企业2013年度的会计工作进行检查,发现存在以下情况:

(1)2013年2月,该企业财务处处长安排其侄女(持有会计从业资格证书)在财务处任出纳,并负责保管会计档案。

(2)发现一张发票“金额”栏的数字有更改痕迹,发票出具单位在“金额”栏更改处加盖了其单位印章。经查阅相关合同、单据,确认其更改后的金额数字是正确的。

(3)2013年12月,由于全球金融危机的影响,企业出口产品滞销,经销业绩滑坡,企业法定责任人要求财务处处长对该年度的财务数据进行处理,以确保企业实现“盈利”。企业财务处处长遵照办理(该企业的行为尚不构成犯罪)。

要求:根据上述资料,回答下列问题。

由出纳人员兼做会计档案保管工作违反了()。

A.会计外部监督制度的规定

B.会计岗位责任制度的规定

C.会计机构内部牵制制度的规定

D.会计机构内部稽核制度的规定

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