用物理学上的分子运动阐述油品蒸发损耗的物理过程

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问题:

用物理学上的分子运动阐述油品蒸发损耗的物理过程

考点:大学试题油库设计与管理油库设计与管理题库
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下列各组词语中加横线的字,读音全部正确的一组是

A.像xiào堂lòng遒jìng嘉言行yì

B.忸薄fěi 目chēng婆起舞suō

C.日yì言zēng颓pǐ长歌哭dàng

D.临lì止è漫sù叱风云chà

题型:问答题 简答题
第一盒中有4个白球与2个黄球,第二盒中有3个白球与3个黄球.分别从每个盒中取出1个球,则取出2个球中有1个白球与1个黄球的概率是(  )
A.
9
10
B.
1
2
C.
1
8
D.
1
10
题型:问答题 简答题

请根据下面需要志愿帮助的信息,找出能够为他们提供帮助的援助者。

A. Suppose World Cup will be held in Bejing and many people from other countries will come to visit China. The taxi drivers in Dongfeng Taxi Company think the way to show kindness is to be able to greet the foreigners in their languages. They need someone who can teach them languages and the best time is at night when they are not so busy.

B. Tim is so addicted to on-line games that he cannot concentrate on his study like before. Now he often misses school in order to play games, thus telling lies to his teachers and parents again and again, though he realizes what he does is wrong, he just can’t stop it. How badly he needs someone’s help.

C. Marie, a 44-year-old single mother of three, has to walk two miles to the nearest supermarket twice a week because she doesn’t know which bus to take. What’s worse, since she does not know words, she can not write out a shopping list. Also, she can only recognize items by sight, so if the product has a different label, she will not recognize it as the product she wants.

D. “ Help hand” organization will hold an event to help the starving children in Africa. The even starts in August and those taking part in will go without food for 30 hours. In this way, it is expected that money will be raised for the poor children.

E. “ Green Earth” cares a lot for the animals in danger. Still many people in the world don’t know much about the importance of animal protecting. This summer vacation a lot of events will be organized to call on people to live in harmony with our earth.

F. A group of young children in a remote village in southwest China are in great need of teachers. Because of the low salary, any teachers came and then went. The villagers hope to have a teacher who can stay for at least a year, because they know knowledge can make a different to the children’s future.

请阅读下 * * 个援助者的基本情况, 然后匹配相关信息:

小题1: Stephen: Last summer I went through a training program and became a literacy volunteer. When I began to discover what other people’s lives were like because they could not read, I realized the true importance of reading.

小题2: Ben: After graduation, I don’t want to apply a job at once. I plan to spare one year to help those who need help most and try my best to improve their lives.

小题3: Susan: I am a girl from England and has studied French for years. I am here in Beijing University studying Chinese. I hope the voluntary work will help me to get in touch with Chinese people and get to know about China. Although my study is busy, I can be free at night and at the weekends.

小题4: Tom: Since I myself have overcome a lot of difficulties in my life, I understand young people’s problems and I know how to listen patiently to others and offer some advice. I am working now in the daytime so I can only spend two to three hours a day at night to help others.

小题5:Liza: I burst into tears when I saw the programme. What a bad sight! They are only bone and skin left. They are dying. I realized how lucky I am with enough food and a good chance to get education. The summer vacation is coming and I hope I can do something for them.

提供援助者                        接受援助者

1. Stephen                            A

2. Ben                               B

3. Susan                              C

4. Tom                               D

5. Liza                               E

Choose the most suitable heading from A – F for each paragraph.

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质量为m的石子从距地面高H的塔顶以初速度v0竖直向下运动,若只考虑重力作用,以塔顶为重力势能的零势点,则石子下落到距离地面高为h处时的机械能为(  )

A.mgH+

1
2
m
v20

B.

1
2
m
v20

C.mgH+

1
2
m
v20
-mgh

D.mgH+

1
2m
v20
+mgh

题型:问答题 简答题

男性,72岁,因持续性胸痛6小时入院,查体:双肺底有少量湿啰音,诊断为急性心肌梗死。该患者心功能分级为( )。

A.NYHA分级III级

B.NYHA分级Ⅳ级

C.NYHA分级II级

D.killip分级II级

E.killip分级III级

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