X线照片上某处阻挡光线能力的大小称为A.密度 B.亮度 C.对比度 D.阻光率 E.

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问题:

X线照片上某处阻挡光线能力的大小称为

A.密度

B.亮度

C.对比度

D.阻光率

E.透光率

考点:医技考试放射技士基础知识初级放射医学技士基础知识
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材料牌号,T10A球化退火(或调质)高温回火(),要求耐磨性好和变形小的零件,如车削精密丝杠。

A、HB170~240

B、HB180~250

C、HB190~260

D、HB200~280

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Millions of people all over the world spend their holidays travelling. They travel to visit other countries, modern cities and ancient towns. They travel to enjoy these special places, or just to relax. It is always interesting to discover new things and different ways of life, such as by meeting different people, trying different food, and listening to different music.

People who live in the country like to go to big cities. They like to spend their time visiting museums and art galleries, looking at shop windows and dining at restaurants. People who live in the city usually like a quiet holiday by the sea or in the mountains, with nothing to do but walk and bathe in the sun.

Most travellers take a camera with them and take pictures of everything that interests them. Then, perhaps years later, they can look at the photos and be reminded of the happy time they once had.

People often travel by train, by boat or by car. All means of travelling have their advantages and disadvantages and people choose one according to their plans and the places they are going.

If we travel a lot, we will see and discover a lot of things that we could never see or experience at home, though we may read about them in books and newspapers. The best way to study geography is to travel, and the best way to get to know and understand people is to meet them in their own homes.

小题1:What is interesting to do when people travel?

A.To find the advantages and the disadvantages of travelling.

B.To listen to different music and take pictures.

C.To discover new things and different ways of life.

D.To go to big cities and meet different people.小题2:How do people usually spend a quiet holiday by the sea or in the mountains?

A.They spend their time visiting museums and art galleries.

B.They do nothing but walk and bathe in the sun.

C.They do nothing but sleep outdoors.

D.They go to look at shop windows and eat at restaurants.小题3:Why do many travellers take pictures of everything they like?

A.Because they like taking all kinds of pictures.

B.Because they all take a camera with them while travelling.

C.Because the pictures are beautiful to look at.

D.Because the pictures can remind them of the happy time.小题4:What’s the best way to study geography?

A.To travel a lot and experience more.

B.To meet some more people in their homes.

C.To learn in books or in newspapers.

D.To see and experience at home.小题5:What can we infer from the last paragraph?

A.We’d better go the countryside for a holiday.

B.Taking photos in a trip is unnecessary.

C.It’s good for us to travel more if possible.

D.Cities are the best choice of all the travellers.

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女性,23岁,食用鱼片干及啤酒后出现恶心、呕吐,数小时后诉唇麻、四肢无力,不久呼吸困难,昏迷。最可能的诊断是()。

A.急性酒精中毒

B.河豚鱼中毒

C.肉毒杆菌中毒

D.过敏性休克

题型:单项选择题

下列关于NBAP基本过程描述中错误的是()。

A.公共传输信道建立,重配置或者是删除时,每发送一次信令消息仅仅可以配置上行或者下行的公共信道,所以在小区建立初期可以看到发送两次公共传输信道建立;

B.在TD-SCDMA系统中,资源闭塞和解闭塞可以操作的逻辑资源只能是小区;

C.小区建立,重配置和删除消息都是由RNC发送给NodeB的,一旦小区建立成功,DwPCH、P-CCPCH和BCH都将存在,并且帧结构的上下行转换点也被定义好,小区和信道的状态都被设置为允许态;

D.无线链路重配置有同步和异步两种,目前TD系统使用的是同步无线链路从配置方式,RNC给NodeB发送一条无线链路重配置请求,NodeB恢复一条响应消息,整个同步无线链路重配置流程结束。

题型:单项选择题

提示羊水Ⅰ度胎粪污染()

A.羊水呈浅绿色

B.羊水呈棕黄色

C.羊水无色澄清

D.羊水呈乳白色,略混浊

E.羊水呈黄绿色

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