病态窦房结综合征是由于() A.心肌细胞自律性升高 B.单纯窦房结传导功能障碍 C.

题型:单项选择题

问题:

病态窦房结综合征是由于()

A.心肌细胞自律性升高

B.单纯窦房结传导功能障碍

C.以上均不对

D.单纯窦房结起搏功能障碍

E.窦房结起搏功能、传导功能均有障碍

考点:北京住院医师皮肤科Ⅰ阶段心血管内科心血管内科题库
题型:单项选择题

患者男性,50岁,2周前发现右下后牙龈有小包。平时无明显不适,曾在外院摄X线片。查:见右下第一前磨牙咬合面龋洞深,探无感觉,叩痛异常感,右下第一磨牙近中根尖部牙龈上有瘘管。X线片见右下第一前磨牙根尖X透射区不规则,边界模糊。右下第三磨牙前倾阻生,余未见异常

主诉牙应是

A.右下第一前磨牙

B.右下第二前磨牙

C.右下第一磨牙

D.右下第二磨牙

E.右下第三磨牙

题型:单项选择题

流通领域中的包装大致可分为:销售包装和运输包装

题型:单项选择题

Getting rid of dirt, in the opinion of most people, is a good thing. However, there is nothing fixed about attitudes to dirt.

In the early 16th century, people thought that dirt on the skin was a means to block out disease, as medical opinion had it that washing off dirt with hot water could open up the skin and let ills in. A particular danger was thought to lie in public baths. By 1538, the French king had closed the bath houses in his kingdom. So did the king of England in 1546. Thus began a long time when the rich and the poor in Europe lived with dirt in a friendly way. Henry IV, King of France, was famously dirty. Upon learning that a nobleman had taken a bath, the king ordered that, to avoid the attack of disease, the nobleman should not go out.

Though the belief in the merit of dirt was long-lived, dirt has no longer been regarded as a nice neighbor ever since the 18th century. Scientifically speaking, cleaning away dirt is good to health. Clean water supply and hand washing are practical means of preventing disease. Yet, it seems that standards of cleanliness have moved beyond science since World War Ⅱ. Advertisements repeatedly sell the idea; clothes need to be whiter than white, cloths ever softer, surfaces to shine. Has the hate for dirt, however, gone too far?

Attitudes to dirt still differ hugely nowadays. Many first-time parents nervously try to warn their children off touching dirt, which might be responsible for the spread of disease. On the contrary, Mary Ruebush, an American immunologist(免疫学家),encourages children to play in the dirt to build up a strong immune system. And the latter position is gaining some ground.

小题1:The kings of France and England in the 16th century closed bath houses because        .

A.they lived healthily in a dirty environment.

B.they thought bath houses were to dirty to stay in

C.they believed disease could be spread in public baths

D.they considered bathing as the cause of skin disease小题2:Which of the following best describes Henry IV’s attitude to bathing?

A.Afraid.

B.Curious.

C.Approving.

D.Uninterested.小题3:How does the passage mainly develop?

A.By providing examples.

B.By making comparisons.

C.By following the order of time.

D.By following the order of importance.小题4:What is the author’s purpose in writing the passage?

A.To stress the role of dirt.

B.To introduce the history of dirt.

C.To call attention to the danger of dirt.

D.To present the change of views on dirt.

题型:单项选择题
不定项选择
如图所示,电灯S发出的光先后经过偏振片A和B,人眼在P处迎着入射光方向,看不到光亮,则(   )

A.图中a光为偏振光

B.图中b光为偏振光

C.将B转过180°后,在P处将看到光亮

D.将B转过90°后,在P处将看到光亮

题型:单项选择题

我国《宪法》规定县级以上的各级地方人民政府设立审计机关,地方各级审计机关依照法律规定独立行使审计监督权,对下列哪些机关负责

A.国务院审计署和本级人民政府

B.本级人大民代表大会常委会和上一级审计机关

C.本级人民代表大会和本级政府

D.本级人民政府和上一级审计机关

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