关于物质对X线衰减的叙述,错误的是A.X线穿过物质时被衰减B.康普顿效应不产生衰减C

题型:单项选择题

问题:

关于物质对X线衰减的叙述,错误的是

A.X线穿过物质时被衰减
B.康普顿效应不产生衰减
C.吸收衰减为光电效应所致
D.诊断领域X线衰减与电子对效应无关
E.X线能量影响衰减

考点:放射医学技师放射技师相关专业知识初级放射医学技师相关专业知识
题型:单项选择题

关于抗体与Ig的概念的描述,正确的有()

A.抗体是B细胞识别抗原后活化增殖分化为浆细胞所产生的一类能与相应抗原特异性结合的球蛋白

B.抗体是Ig

C.Ig都是抗体

D.Ig不一定都具有抗体活性

E.抗体是生物学功能上的概念,免疫球蛋白是化学结构上的概念

题型:单项选择题

使用于A319-112/115型飞机的手提式氧气瓶,放瓶体充满氧气后,容量为()立升。

题型:单项选择题

关于墙钢筋绑扎的说法,正确的是()。

A.钢筋直径小于等于12mm时,墙垂直钢筋每段长度不宜超过6m

B.钢筋直径大于12mm时,墙垂直钢筋每段长度不宜超过8m

C.水平钢筋每段长度不宜超过10m

D.采用双层钢筋网时,在两层钢筋间应设置撑铁或绑扎架

题型:单项选择题

根据药品经营许可证管理办法,下列正确的是()

A.(药品经营许可证)有效期满未换证的,由原发证机关注销

B.(药品经营许可证)的正本应置于营业场所醒目位置

C.药品经营暂停销售,由原发证机关收回

D.药品经营暂停销售,由原发证机关注销

E.药品经营企业终止经营药品或者关闭的,由原发证机关注销

题型:单项选择题

阅读理解。

Blink: a boy, aged 18

Birth date: October 15th, 1991

Speaking: English, Russian

Now in: Dodge City, Kansas

From: Pratt, Kansas

Learning: Japanese, Chinese, Spanish

About me: I love all outdoor activities, especially playing ball games, traveling, and climbing. I play the guitar,

and can say that I'm really good at it. I also like playing chess, but I don't play it well. If you are good at it,

maybe you can teach me. I'm going to college this September. All I really want to do during the summer

holiday is travel, teach and learn languages (this is my hobby), see things, and build great friendships. I'd like

people aged 17-20 to get in touch with me, both girls and boys. It's better if you're from Beijing or Tokyo.

I've made 15 friends over the Internet. If you'd like to be one of them, send me an email at blink001@yahoo.

com. My MSN is blink001@hotmail.com. I'd love to be your friend!

1. Where is Blink now? [ ]

A. In Dodge City.

B. In Pratt.

C. In Beijing.

D. In Russia.

2. What is Blink NOT good at? [ ]

A. Playing the guitar.

B. Playing ball games.

C. Playing chess.

D. Learning languages.

3. Blink does not want to be friends with anyone who is _____. [ ]

A. 15 years old

B. 17 years old

C. 18 years old

D. 20 years old

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