A型简易进近灯光系统由发()光的全向发光灯组成。A.白色 B.红色 C.绿色 D.蓝

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问题:

A型简易进近灯光系统由发()光的全向发光灯组成。

A.白色

B.红色

C.绿色

D.蓝色

考点:民航机场工程1D415000民航机场目视助航工程1D415000民航机场目视助航工程题库
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小芳读一本书,第一天读了全书的30%,第二天比第一天少读了20页,这时还有一半没读完.这本书有多少页?

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参照完整性规则的更新规则中“级联”的含义是

A.更新父表中的连接字段值时,用新的连接字段值自动修改子表中的所有相关记录

B.若子表中有与父表相关的记录,则禁止修改父表中的连接字段值

C.父表中的连接字段值可以随意更新,不会影响子表中的记录

D.父表中的连接字段值在任何情况下都不允许更新

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If you dream in color, you’re not alone: the majority of people today claim to have colorful dreams. But it wasn’t always thus. Research conducted in the early part of the last century consistently found that people reported dreaming most often in black and white.

According to Eva Murzyn at the University of Dundee, there are at least two possible explanations for this strange situation.

The first is the methods used in the researches. The early studies tended to use questionnaires(问卷), while more modern studies use dream diaries (filled in upon rising in the morning) or so-called “REM-awakening”, which involves interrupting people’s dream-filled periods of sleep to find out what they were dreaming about. People’s memories of their dreams are likely to be less accurate by using the questionnaire approach and they are more likely to reflect their beliefs about the form dreams generally take in an unclear way.

The second explanation has to do with black and white television and film. It's possible that the sudden increase in black and white film and television during the first half of the last century either affected the form of people’s dreams at that time, or affected their beliefs about the form dreams generally take.

According to Murzyn’s findings, it’s the explanation based on media exposure that carries more weight. She used both questionnaire and diary methods to study the dreams of 30 older (average age 64) and 30 younger people (average age 21).

The methodological technique made no difference to the type of dreams people reported. However, the extremely important thing was that, across both questionnaires and diaries, the older participants (who had had significant early life exposure to black and white media) reported experiencing significantly more black and white dreams over the last ten days than the younger participants (22 per cent vs. 4 per cent).

Another finding was that older participants reported black and white dreams and colorful dreams to be of equal clearness. By contrast, the younger participants reported that the quality of black and white dreams was poorer. This raises the possibility that the younger participants didn’t really have any black and white dreams at all, but were simply regarding poorly remembered dreams as black and white.

小题1:We learn from the text that ______.

A.people in the first half of the last century never had colorful dreams

B.older people are more likely to have black and white dreams

C.the dreams of younger people are always colorful

D.people today don’t have white and black dreams any more小题2:What did Murxyn do to find out the explanations for the colors in people’s dreams?

A.She applied both questionnaire and diary methods to study people’s dreams.

B.She used diary methods to record people’s dreams.

C.She chose 60 people to answer her questions about their dreams.

D.She woke people up to record the colors of their dreams.小题3:What does the underlined expression “carry more weight” in paragraph 5 mean?

A.be heavier

B.be more powerful

C.be more important

D.be more useful小题4:From Murxyn’s findings we can infer that ______.

A.both older people and younger people could report colorful dreams clearly

B.young people don’t have any black and white dreams in fact

C.the color of a person’s dream is decided by one’s age

D.it is probably the color of media that affects the color of one’s dream

题型:单项选择题

习 * * * * 在南京大屠杀死难者国家公祭仪式上的讲话中强调忘记历史就意味着背叛,否认罪责就意味着重犯。宣示中国人民()的坚定立场。

A、开创未来

B、珍爱和平

C、牢记历史

D、不忘过去

题型:单项选择题

目前常见的网络管理协议有 【15】 、公共管理信息服务/协议(CMIS/CMIP)和局域网个人管理协议(LMMP)等。

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