目前,化石燃料仍是世界上的主要能源. (1)化石燃料属于______能源(选填“

题型:填空题

问题:

目前,化石燃料仍是世界上的主要能源.

(1)化石燃料属于______能源(选填“可再生”或“不可再生”).

(2)完全燃烧4m3的天然气可放出______J的热量.(天然气的热值是7.5×107J/m3

(3)化石燃料燃烧可造成空气污染,为减小有害物质排放,请你提出一条合理建议:______.

考点:热量的计算能源家族:化石能源,一次能源,二次能源,生物质能,不可再生能源,可再生能源能源消耗对环境的影响
题型:填空题

依据标准文件规定,索赔事件发生后的28天内,承包人应向工程师递交()。

A.现场同期记录

B.索赔意向通知

C.索赔报告

D.索赔证据

题型:填空题

0.042的计数单位是______,它有______个这样的单位.

题型:填空题

Husband had just bought a new washing machine for me. I decided to use it and I washed a lot of things. Everything worked well, but I found one of my husband’s socks missing. I looked everywhere for it, but I couldn’t find it anywhere.

The next morning, I got ready for school as usual. When the bell rang, the students came in. I greeted them first and then told them what we were going to do that day.

When I turned around to write on the blackboard, the class broke out a roar!

They laughed and laughed. They laughed so much, in fact, that I was afraid the headmaster would be into seeing all this.

I asked the class to stop, but the more I talked, the more they laughed. I decided to pay no attention to them and I continued to write on the blackboard. When I did this, they roared even more.

Finally, the teacher who had the room next to mine came in to see what all the laughter was about. When he came in, he started laughing, too!

“Good heavens,” I said. “Will someone please tell me what is so funny?’

“Oh, God,” said the teacher. “You have a brown sock to the back of your skirt!”

So that’s how I found my husband’s missing sock.

“Oh, well,” I said to the class. “Let’s just say you have had an unforgettable lesson on static(静止的)electricity.”

41. What was the writer?

A. A washer           B. A student          C. A headmaster           D. A teacher

42. What happened when the writer turned around to write on the blackboard?

A. The class roared with anger.                      B. The class began to laugh loudly.

C. Another teacher came in.                       D. There was a loud noise outside the room.

43. Why couldn’t she find one of her husband’s socks?

A. Because some students had hidden it.

B. Because her husband had taken it away.

C. Because she had left it in the classroom.

D. Because she never expected that it would stick to her skirt.

44. Why did the teacher from the next room laugh?

A. Because the whole class laughed.

B. Because he saw the writer fooled by the class.

C. Because he saw some of the students making faces.

D. Because he found a sock on the back of the writer’s skirt.

45. Which of the following statements is WRONG?

A. The writer had just bought a new washing machine.

B. The writer found one of her husband’s socks missing.

C. The students told her about the laughing.

D. She was afraid of being seen by the headmaster.

题型:填空题

用5.4克某三价金属与稀硫酸反应,生成0.6克氢气,则此金属的相对原子质量为(  )

A.54

B.60

C.27

D.18

题型:填空题

《中华人民共和国国歌》的歌词原名叫(),其作者是现代著名剧作家()。

更多题库