用真空滤油机除去油中水份时,水的沸点与其真空度成正比。

题型:判断题

问题:

用真空滤油机除去油中水份时,水的沸点与其真空度成正比。

考点:化验员考试油化验员考试油化验员考试题库
题型:判断题

Hi, my name is Wang Jun. Do you want to know about my staying in America? Well, to tell you the truth, it is really an eye-opening experience here.

In China, I had English classes five times a week since Grade Five. But I didn’t know textbook English could be so different from everyday English until I came to Hotchkiss School, Connecticut. When I first studied English, I was told to say “I’m fine.” when people say “How are you?” But in the USA, I found that people say “I’m good.” or “I’m tired.”

One day, someone greeted (问候) me with “What’s up?” It made me confused. I thought for a moment and then smiled because I didn’t know what to say.

Since then, I have learnt more and more differences between Chinese and American cultures. To my surprise, American girls spend a lot of time in the burning sun getting a tan (晒黑的肤色). In China, girls try every possible way to keep their skin white.

American students are hard-working like Chinese students. In China, schoolwork is almost everything, so we study hard and that’s it. But here, a “good” student not only gets good grades, but also does a lot for the public. That is to say, they get lots of knowledge at school and learn many life skills from social (社会的) work.

小题1:In China, Wang Jun had _______ English classes every week.

A.five

B.four

C.three

D.two小题2:Wang Jun found that _______ when he came to Hotchkiss School in the USA.

A. it was really important to learn English well

B. English he learnt in China was helpful to him

C. American students were more hard-working than Chinese students

D. textbook English was different from everyday English

小题3:What does the underlined word “confused” mean in Chinese?

A.困惑的

B.滑稽的

C.紧张的

D.伤心的小题4:American girls make Wang Jun feel surprised because _______.

A.they work hard at school

B.they try to keep their skin white

C.they hope to get a tan

D.they do lots of social work小题5:Which of the following is the best title for the passage?

A.My wonderful travel in the USA

B.After-school activities in American schools

C.What American students learn at school

D.My study experience in the USA

题型:判断题

下列关于著名化学家的名字、国籍及主要贡献的对应关系中,不正确的是  [ ]

科学家  

   国籍   

主要贡献  
A贝采利乌斯

瑞典

首先提出“有机化学”和“有机化合物” 的概念
B

维勒

德国

首次人工合成了有机物尿素
C

李比希

法国

创立了有机物的定量分析方法
D

门捷列夫

俄国

发现元素周期律
题型:判断题

下列关于传染病流行病学特征的描述,错误的是()

A.霍乱是外来性传染病

B.发病率高于一般水平为流行

C.流行范围超过国界或洲界时为大流行

D.短时间内病例集中发生为暴发

E.不同人群中的分布不属于流行病学特征

题型:判断题

现代意义上的法制的中心环节是( )。

A.有法可依

B.执法的民主化

C.司法的民主化

D.依法办事

题型:判断题

下列说法中,不属于数据模型所描述的内容的是( )。

A.数据结构

B.数据操作

C.数据查询

D.数据约束

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