对200KV-X线等剂量曲线的描叙,些列哪种不正确()A、200KV-X线的等剂量曲

题型:单项选择题

问题:

对200KV-X线等剂量曲线的描叙,些列哪种不正确()

A、200KV-X线的等剂量曲线的边缘突然中断

B、200KV-X线的等剂量曲线的边缘散射时多并随时射野增大

C、随能量升高等剂量线由弯曲变平直

D、半影越大等剂量线越弯曲

E、搞等值剂量线外扩,低值等剂量线内收

考点:放射治疗LA医师上岗证考试放射治疗LA医师上岗证考试题库
题型:单项选择题

There was once a young man called Paul in a village in the USA. Paul was very lazy because his father was a rich farmer and he didn’t have to work. Mr Smith, a neighbour of his, was a blacksmith (铁匠). He used to work in his shop all day. Paul spent hours and hours watching how the blacksmith worked every day. “Young man, why don’t you try your hand to make a shoe tack (铁钉), even it is only to pass the time?” said the blacksmith one day, “ Maybe it will be useful to you some day.” Finally, the lazy boy began to have a try. After practicing some times, he became skilled and could make very nice tacks.

Years later, Paul’s father died and he lost all the things because of a war (战争). He had to move to another country and live by himself. It happened that there were many shoemakers paying high prices to buy tacks for the shoes, because in that part of the country there was a great need of tacks for soldiers’ shoes. Paul went to talk with them. He told them that he would make the tacks if they could help him find a workshop in the village. The shoemakers agreed. Then Paul made a lot of money by making tacks. “How funny it is!” he said to himself, “Even by making shoe tacks, one can become rich.”

小题1:Why didn’t Paul have to work?

A. Because he couldn’t do anything.

B. Because he was too lazy.

C. Because his father was very rich.

D. B and C.

小题2:What’s the Chinese meaning of skilled?

A.熟练的.

B.适应的.

C.自信的.

D.巧妙的.小题3:What did Paul do after his father died because of the war?

A.He travelled to another country.

B.He moved to another country.

C.He learned to make shoes.

D.He started a workshop.小题4:How many kinds of people appeared in the story except Paul ?

A.Five.

B.Four.

C.Three.

D.Two.小题5:What can we learn form the story?

A.Making tacks is important.

B.Wars can make people hard-working.

C.Nothing is difficult to learn.

D.Everything you learned may be useful.

题型:单项选择题

与机械的特定状态或与技术过程有关的安全风险是指可能发生( )的综合。

A.危险因素的性质和危害的概率

B.危害的概率和后果的严重程度

C.危险因素的数量和后果的严重程度

D.危险因素的状态和性质

题型:单项选择题

判断休克的依据,下列哪项不正确

A.精神状态:反映脑组织的灌流情况

B.尿量少于40ml/h,可诊断早期休克

C.休克指数为1.5时,提示有休克

D.皮肤温度、色泽:是反映体表灌流情况的标志

E.收缩压<90mmHg,脉压<20mmHg是休克存在的表现

题型:单项选择题

五岁男孩,生长发育正常,来院体检。

最可能的身高是()

A.95cm

B.105cm

C.115cm

D.125cm

E.135cm

题型:单项选择题

男性,70岁。10年来患高血压病,2小时前因有不顺心的事,血压突然升高达 200/120mmHg,呼吸困难不能平卧,发生急性左心衰竭来诊。

能最快明确诊断的检查是

A.X线钡餐造影

B.鼻胃管或三腔管检查

C.内镜检查

D.选择性腹腔动脉造影

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