下列物质中一定属于氧化物的是( ) A.含有氧元素的化合物 B.能分解出氧气的化

题型:选择题

问题:

下列物质中一定属于氧化物的是(  )

A.含有氧元素的化合物

B.能分解出氧气的化合物

C.氧气跟某物质反应的生成物

D.由氧元素和另一种元素组成的化合物

考点:氧化物
题型:选择题

在"我的电脑"或"资源管理器"窗口中,要复制整张软盘,正确的操作是 ( )

A.用鼠标左键推动一个软驱图标到一个软驱图标上

B.用鼠标右键单击要复制的软驱图标,执行快捷菜单中的"复制磁盘"命令项

C.选择好要复制软盘上的全部文件夹和文件,执行"文件"菜单中的"发送"命令项

D.选择好要复制软盘上的全部文件夹的文件,用鼠标左健拖动到目的磁盘处

题型:选择题

要化好的摄影妆,必需要有好的()。

A.光线

B.温度

C.湿润度

D.以上三项都不正确

题型:选择题

阅读理解。

     In 1890 William James, the American philosopher and physician and one of the founders of modern

psychology, defined psychology as"the science of mental life" and this definition provides a good starting

point for our understanding even today. We all have a mental life and therefore have some idea about what

this means, even though it can be studied in rats or monkeys as well as in people and the concept remains

difficult to understand.

     Like most psychologists, William James was particularly interested in human psychology, which he

thought consisted of certain basic elements: thoughts and feelings, a physical world which exists in time

and space, and a way of knowing about these things. For each of us, this knowledge is primarily personal

and private" It comes from our own thoughts, feelings and experience of the world, and may or may not

be influenced by scientific facts about things. For this reason, it is easy for us to make judgments about

psychological matters using our own experience as a standard. We behave as amateur psychologists when

we offer opinions on complex psychological phenomena. However, problems arise when two people

understand these things differently. Formal psychology attempts to provide methods for deciding which

explanations are most likely to be correct, or for determining the circumstances under which each applies.

The work of psychologists helps us distinguish between inside information, which is subjective, and may

be prejudiced and unreliable, and the facts: between our predictions and what is"true" in scientific terms.

     Psychology, as defined by William James, is about the mind or brain, but although psychologists do study

the brain, we do not understand nearly enough about its workings to be able to comprehend the part that it

plays in the experience and expression of our hopes, fears, and wishes, or in our behaviour during experiences

as varied as giving birth or watching a football match. Indeed, it is rarely possible to study the brain directly.

So, psychologists have discovered more by studying our behaviour, and by using their observations to obtain

hypotheses (假设) about what is going on inside us.

1. The first paragraph is mainly about _____.

A. the founder of modern psychology

B. the definition of psychology

C. the complexity of psychology

D. the influence of psychology

2. From Paragraph 2, we can know that problems arise because _____.

A. of the difference between inside information and the facts

B. of different thoughts and feelings about psychology

C. people usually make judgments based on their own ideas

D. amateur psychologists cannot use scientific terms

3. According to the passage, psychologists study the brain mainly _____.

A. in a direct way

B. with their own experience

C. by observing how it works

D. by watching people's behaviour

4. Which of the following can be the first sentence in the fourth paragraph?

A. Psychology is also about the ways people use their mental abilities to operate in the world around them.

B. William James is considered to be the greatest psychologist in the 1890s.

C. Psychology suggests that living beings adapt to a changing environment so that they can survive.

D. It is important for psychologists, as well as ordinary people, to be aware of the reasons.

题型:选择题

呼吸性碱中毒中()

A.AB>SB

B.AB<SB

C.AB、SB均正常

D.AB、SB均低于正常

E.AB、SB均高于正常

题型:选择题

下面哪一种关于拆卸差速器齿圈的说法是正确的?()

A.拆卸之前,做出标记,以便不改变齿圈和差速器箱的装配位置和方向

B.当松开齿圈定位螺栓时,按照任意方向松开齿圈定位螺栓。

C.无要求

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