被照体因素对照片对比度无影响的是() A.被照体的原子序数 B.被照体的密度 C.被

题型:单项选择题

问题:

被照体因素对照片对比度无影响的是()

A.被照体的原子序数

B.被照体的密度

C.被照体的面积

D.被照体的厚度

E.组织中的空腔或对比剂

考点:放射医学技术(医学高级)放射医学技术综合练习放射医学技术综合练习题库
题型:单项选择题

A. A sense of humour is not an inborn ability.
B. A sense of humour can be developed in our life.
C. A sense of humour helps us from several aspects.
D. A sense of humour means more than telling jokes.
E. A sense of humour can be expressed in many ways.
F. A sense of humour helps people to better enjoy life.
小题1:
As awareness of the cenefits of humour increases, most of us want to get all the langhs we can. It seems that almost every day there is another new discovery about the power of humour to help us physically, mentally, cmotionally, and sp[iritually. Every system of the body responds to langhter in some important or positive way .
小题2:Many pcople mistakenly believe that we are born with a sense of humour. They think that when it comes to a sense of humour. “either you have got it or you don't .” This is
false! What is true, however, is that the ability to laugh and smile is actually something we are born with. For example, we laugh when we are tickled under the arm, even without thinking about how to react.
小题3:
The parts of the brain and central nervous system that control laughing and smiling are mature at birth in human infants, but that is not the same thing as having a sense of humour. (After all, when a baby laughs in his small bed we don’t rush over and say, “That kid has a great sense of humour!”) Your sense of humour is something you can develop over a lifetime. Don’t be nervous before others and try to laugh at yourself-then you will make them laugh too.
小题4:
Humour includes a lot more than laughing and joke telling. Many people worry needlessly that they do not have a good sense of humour because they are not good joke tellers. More than jokes, a sense of humour requires being willing and able to see the funny side of life’s situations as they happen. In fact, one of the best definitions(定义)of a sense of humour is “the ability to see the nonserious element in a situation.”
小题5:
There may be a thousand different ways to express your sense of humour, but joke telling is only one of those ways. As more is discovered about how humour benefits our life, more people will be able to see and enjoy the humour when they are in a difficult situation. Life depends on air, food and water, but it is made easier to live with a good sense of humour.
题型:单项选择题

19世纪末,列强掀起瓜分中国的狂潮,纷纷划分势力范围,其中有()

A.山东成为德国的势力范围

B.长江流域成为英国的势力范围

C.福建成为日本的势力范围

D.滇、粤、桂成为法国的势力范围

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垂直线必须用(),不能用角度尺或90°角度尺划,更不能用目测法划线。

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胸痛概述

题型:单项选择题

测试前应有现场(),它是进行施工的依据。

A、施工设计

B、井况

C、组织人员

D、监督

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