关于数据的概念,以下说法不正确的是()。 A.数据也称观测值 B.是实验、测量、观察

题型:单项选择题

问题:

关于数据的概念,以下说法不正确的是()。

A.数据也称观测值

B.是实验、测量、观察、调查等的结果

C.常以数量的形式给出

D.是一个或一组确定值

考点:加油站操作员考试加油站操作员理论知识加油站操作员理论知识题库
题型:单项选择题

已知等腰三角形的顶角为x度,底角为y度,那么底角度数y与顶角度数x之间的关系式是______,其中自变量是______,因变量是______.

题型:单项选择题

在短文的空格内填入适当的词,使其内容通顺,每空格限填一词,词首字母已给。

     Reading newapapers has become importamt in our everyday life. Some poople read newspapers first in the

morning,others read newspapers as soon as they have free time. So they can learn what is h   1   in the world.

     Sometimes, we do not have cnough time to read all the news c   2   ,so we just take a quick look at the

front pagc. At other times,we may be so busy t  3   we liave only a few minutes to look at the beadlines (标题).

     Newapapere can be found everywhere in the world.We can get many different,kinds of news-papsrs in big

cities,but in some mountain v  4   we can see few newspapers.

     Sometime, newapapers are published (出版) once a woek,but most of the papers are published once a day,

some even published twice a day,You Know different people like different newapapers. Some like world news,

and o   5   that many Chincec students are reading Einglish newapapers.They bring us more and more

information.

题型:单项选择题

软组织损伤的药物治疗,其目的是()

A.消除疼痛,减轻炎症

B.抗感染,消除水肿

C.防止粘连

D.减轻疼痛,促进伤口愈合

E.预防功能障碍

题型:单项选择题

优质碳素结构钢的钢号以两位数字表示,此两位数字表示()。

题型:单项选择题

教育的历史性

更多题库