正常组织最大耐受剂量是指() A.TD5/5 B.TD50/5 C.指正常组织不发生

题型:单项选择题 A1/A2型题

问题:

正常组织最大耐受剂量是指()

A.TD5/5

B.TD50/5

C.指正常组织不发生并发症的剂量

D.指正常组织发生50%并发症概率的剂量

E.以上都不对

考点:肿瘤学主治医师内科、外科、放疗共用试题内科、外科、放疗共用试题题库
题型:单项选择题 A1/A2型题

在X线摄影中,X线束是以焦点作为顶点的锥形放射线束,将被照体G置于焦点与胶片之间时,因为几何投影关系,一般被照体离开焦点一定的距离a(焦一肢距),胶片离开肢体一定的距离b(肢一片距)。所以,肢体在X线胶片上的影像S要比肢体G大,是被放大了的影像,S与G之比即影像的放大率M,而且胶片离肢体越远,影像放得越大。国际放射学界公认:当照片上的半影模糊值<0.2mm时,人眼观察影像毫无模糊之感;当半影模糊值=0.2mm时,人眼观察影像开始有模糊之感。故0.2min的半影模糊值就是模糊阈值。

关于H=F×b/a=F×(M-1),叙述错误的是

A.H表示半影模糊

B.F表示焦点大小

C.b表示焦一肢距

D.M表示放大率

E.M=1+0.2/F

题型:单项选择题 A1/A2型题

阅读下面的短文,回答21—25题

时下,原本被人在网上恶搞的“黑暗童话”,竟成了风行的儿童读物,并且为便于阅读(可获取更多利益吧),多是注音版的:优美的安徒生童话竟成了某些人恶搞的“ ① ”——最后变成白天鹅的丑小鸭,凄惨地被宰杀,成了盘中“烤鸭”; “睡美人”不是被王子唤醒,而是变成了邪恶的复仇女巫;“灰姑娘”最后竟遭遇火刑,成了陪葬者……这种“黑暗”像 ② 在孩子们中间游荡,甚至几欲吞噬那一颗颗幼小的心灵。面对这种情况,我们不能不拍案而起:决不能让 “黑暗童话”毁了孩子!

一个人所具有的优良品性,很大程度上,取决于童年时期所形成的 甲 。苏霍姆林斯基曾说:“如果善良的情感没有在童年形成,那么无论什么时候你也培养不出这种感情来。”儿童获得人生滋养的主要途径之一就是读书。像《安徒生童话》这样的童话经典,都是讲良善终归战胜邪恶,似一条条清澈的小溪,泛着仁爱与正义之波,这便成了人们长大的营养。而某些”黑暗童话“ 像 ③ ,正在污染着一片片葱绿的田野。意在渲染暴力、恐怖等内容的“黑暗童话”,颠倒了正确的荣辱观,放逐了崇高与伟大的情感。面对这种被扭曲的价值观,儿童会迷失方向,沉溺于庸俗与丑恶的泥沼。

针对“黑暗童话”的问题,仅仅依靠公众舆论对其批判是远远不够的,必须要拿出问题的解决方案。首先,那些将经典视为“ ④ ”,肆意切割,用反主流价值来吸引眼球以牟取暴利的人,需要担负起社会的道义与责任。王蒙曾说:“应该扪心自问,你写的作品能不能拿给自己的孩子看?”这不妨可以看作是对某些人的警策之语。其次,儿童书籍究竟是否宜于儿童阅读以及在多大程度上适合儿童接受的判断,还有赖于一个科学、专业、公共的童书评判和儿童阅读的指导体系。当务之急,是在童书出版、儿童教育、儿童公共图书馆服务等领域,组建起若干支可以有效发挥图书监督和阅读指导作用的专业队伍,指导儿童的读书行为,从而防止“黑暗童话”对孩子的侵蚀。

根据文意,填在“甲”处的最恰当的一项是:

A.善良的情感 

B.积极的情感态度价值观 

C.读书习惯 

D.正确的荣辱观

题型:单项选择题 A1/A2型题

Chinese Dinner Table

Of course, the main difference on the Chinese dinner table is chopsticks instead of knife and fork, but that’s only superficial. Besides, in decent restaurants, you can always ask for a pair of knife and fork, if you find the chopsticks not helpful enough. The real difference is that in the West, you have your own plate of food, while in China the dishes are placed on the table and everyone shares. If you are being treated to a formal dinner and particularly if the host thinks you’re in the country for the first time, he will do the best to give you a taste of many different types of dishes.

The meal usually begins with a set of at least four cold dishes, to be followed by the main courses of hot meat and vegetable dishes. Soup then will be served (unless in Guangdong style restaurants) to be followed by staple food ranging from rice, noodles to dumplings. If you wish to have your rice to go with other dishes, you should say so in good time, for most of the Chinese choose to have the staple food at last or have none of them at all.

Perhaps one of the things that surprise a western visitor most is that some of the Chinese hosts like to put food into the plates of their guests. In formal dinners, there are always “public” chopsticks and spoons for this purpose, but some hosts may use their own chopsticks. This is a sign of genuine friendship and politeness. It is always polite to eat the food. If you do not eat it, just leave the food in the plate.

People in China tend to over-order food, for they will find it embarrassing if all the food is consumed. When you have had enough, just say so. Or you will always overeat!

小题1:The real difference on dinner table between China and West is that___________.

A.You’re treated to a formal dinner for the first time.

B.On Chinese dinner table, chopsticks replace knife and fork.

C.The host will do the best to give you a taste of many different types of dishes.

D.You have your own plate of food in West while in China everyone shares the dishes.小题2:If you have a dinner in a Chinese home, in which order will the food be served?

a. serving soup.

b.a set of four cold dishes.

c. staple food such as rice, noodle or dumplings.

d. the main courses of hot meat and vegetable dishes.

A.badc

B.cabd

C.bdac

D.cdab小题3:The “public chopsticks and spoons” are used to ______.

A.taste different dishes

B.consume the food in the plate

C.show the friendship and politeness

D.put food into the plates of their guests小题4:According to the message, the author’s attitude towards Chinese dinner table is______

A.critical

B.objective

C.negative

D.positive

题型:单项选择题 A1/A2型题

不用塑料袋不是一件大事,但展现的却是现代文明的新理念。治理污染没有局外人,保护环境没有旁观者。这告诉我们()。

A.要开辟新时期职业道德建设的新途径

B.要创造多种精神文明创建活动的形式

C.发展先进文化应创建精神文明

D.要积极投身于精神文明建设的伟大实践

题型:单项选择题 A1/A2型题

在布置组团绿地时,只有当绿地的多少面积在标准建筑日照阴影范围以外,才可以计入绿化用地( )

A.1/5
B.1/4
C.1/3
D.1/2

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