钻石有令人难以置信的强度,就是因为它的分子结构为四面体,每个面都是三角形,这说明了结

题型:单项选择题

问题:

钻石有令人难以置信的强度,就是因为它的分子结构为四面体,每个面都是三角形,这说明了结构的强度与下面那个因素有关。()

A、重心位置

B、结构的材料

C、结构的形状

D、综合利用以上各因素

考点:电子与通信技术通信原理通信原理题库
题型:单项选择题

《关于支持循环经济发展的投融资政策措施意见的通知》提出,积极支持符合条件的循环经济项目申请使用国际金融组织贷款和外国政府贷款。支持、鼓励循环经济项目申请()发展机制项目。

A.环保

B.清洁

C.节水

D.节能

题型:单项选择题

Years ago people could hardly accept the ideas of a woman's being a doctor.In order to get into medical school in 1847,Elizabeth Blackwell was asked to keep it a secret that she was a woman.This was contrary to her beliefs,and she refused to do it.After entering medical school,Elizabeth often had to summon(鼓起) all her courage to free the unkindness of teachers and classmates.By her great efforts,she was able to complete her studies.Many people came to her graduation just to have a look at a woman doctor.Doctor Blackwell soon found that most people were not as ready as to go to a woman doctor.She had to struggle to make a living.Then came the great day when she was offered a job as a doctor in a hospital.She did so well that she was asked to organize a new hospital and medical college.The United States can now be proud of thousands of women doctors.

小题1:How do you think Elizabeth was treated in the medical school?

A.Kindly.

B.Unfairly. 

C.Normally. 

D.Cruelly.小题2:Many people came to see Elizabeth when she graduated ______.

A.because they wanted to congratulate her on being a doctor

B.because they didn't believe she would be famous in the future

C.because they wanted to find out the secret of her success

D.because they weren't sure that she could manage to finish her schooling小题3:The underlined word “contrary” most probably means______.

A.against

B.familiar

C.wrong

D.similiar小题4:When she was at the medical school,Blackwell ______.

A.had to pretend to be a boy student in class

B.was discouraged by the others' critical looks

C.felt sorry that she was a woman

D.made great efforts to do well in her lessons

题型:单项选择题

某企业通过土地出让方式取得土地使用权,下列说法不正确的是:

A.应当签订书面土地出让合同

B.企业不按照约定支付土地使用权出让金的,土地管理部门有权解除合同,并要求企业承担违约赔偿责任

C.企业超过合同约定的动工开发日期满1年未动工开发的,可以征收相当干土地出让金20%以上的土地闲置费

D.企业超过合同约定的动工开发日期满2年未动工开发的,可以无偿收回土地使用权

题型:单项选择题

2009年度全国旅行社营业收入为1806.53亿元,同比增长8.64%;毛利润总额为134.36亿元,毛利率为7.44%;净利润总额为11.48亿元,净利润为0.64%。

2009年度全国旅行社的旅游业务营业收入为1745.59亿元,同比增长8.87%;旅游业务毛利润为120.27亿元,旅游业务毛利率为6.89%;实缴税金为12.69亿元,同比增长12.37%;外汇结汇10.51亿美元,同比减少11.24%;全国促销费支出为6.76亿元,同比增长13.87%。

关于2009年全国旅行社营业状况,从资料中可以推出的结论是()。

A.三类旅游业务的毛利率均比上年有所增长

B.国内旅游业务的毛利润比上年增加近8亿元

C.全国旅行社旅游业务的外汇结汇比上年减少近1亿美元

D.全国旅行社促销费用占其旅游业务营业收入的比例比上年有所下降

题型:单项选择题

金属冷却时的()越大,过冷度越大。

更多题库