焦炭冶炼强度I是指每昼夜、每立方高炉有效容积消耗的焦炭量,即一昼夜装入高炉的干焦炭量

题型:判断题

问题:

焦炭冶炼强度I是指每昼夜、每立方高炉有效容积消耗的焦炭量,即一昼夜装入高炉的干焦炭量(Qk)与有效容积(Vu)的比值。

考点:高炉炉前工高炉炉前工题库
题型:判断题

关于原子的说法,错误的是     [ ]

A.原子是化学变化中的最小粒子    

B.原子比分子的体积要小    

C.原子可以相互结合形成分子    

D.分子、原子都能直接构成物质

题型:判断题

描述色谱柱效能和总分离效能的指标分别是()

A.理论塔板数和保留值

B.有效塔板数或有效塔板高度和分离度

C.分离度或有效塔板高度

D.理论塔板高度和理论塔板数

E.有效塔板高度和保留值

题型:判断题

阅读理解

     A terrible mudslide (泥石流) swept through Zhouqu County in northwest China's Gansu

Province on August 7, 2010. Lots of people were killed and injured in the disaster (灾难),

and some are still missing. Now the new school semester began. How about the students there?

     Up till now, most people including teachers and students are still living in the tents. The

students should have started their new semester on August 15. However, the terrible mudslide

disrupted the plan since two schools were damaged and three others were used as resettlement

areas (安置区). The new semester had to be put off for ten days. Also, since many teachers

were killed, parents were worrying that their children might not be able to go to school. Luckily,

54 teachers from neighboring areas were sent to Zhouqu County, and 12 volunteer teachers

arrived there, too. Moreover, all the students got their textbooks and school things for free.

     On the first day of school, a girl said, "The disaster is weighing heavily on my mind (沉重

地压在我的心上). But today school begins. I'm with my classmates again. I feel so happy."

     Zhouqu County has two primary schools, two junior high schools and one senior high school.

The students of the only senior high school had to start the new semester in a school in the

neighboring area. Although the new school is far from their homes, they are happy to return to school.

1. The underlined word "disrupted" means "______" in Chinese.

A. 实施    

B. 打乱      

C. 制定  

D. 完善

2. The new school semester began on ______ in Zhouqu County.

A. August 7    

B. August 15   

C. August 25    

D. September 1

3. What were the parents in Zhouqu County worrying?     

A. There were no textbooks for their children.

B. Their children had problems with their studies.

C. The textbooks were too expensive for them to afford.

D. There were not enough teachers to teach their children.

4. From the underlined words the girl said, we can learn she is very _____.    

A. sad   

B. afraid

C. smart    

D. optimistic (乐观)

5. Which of the following is NOT true according to the passage? 

A. There are five schools in Zhouqu County.

B. Many people had to live in the tents after the mudslide.

C. The teachers now in Zhouqu County are much more than before.

D. The terrible mudslide killed many people and affected people's lives the

题型:判断题

下列这组数中最小数是()

A.11011001B

B.75

C.37Q

D.2A6H

题型:判断题

常见检索表的类型有:()、()和()。

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