如图,轻杆A端用光滑水平铰链装在竖直墙面上,B端用水平绳结在墙C处并吊一重物P,

题型:不定项选择

问题:

如图,轻杆A端用光滑水平铰链装在竖直墙面上,B端用水平绳结在墙C处并吊一重物P,在水平向右的力F缓缓拉起重物P的过程中,杆AB所受压力的变化情况是

[ ]

A.变大    

B.变小

C.先变小再变大  

D.不变

考点:共点力的平衡
题型:不定项选择

首选的治疗秃发的手术方法为

A.瘢痕切除,双巨大头皮瓣旋转修复

B.应用组织扩张器扩张头皮,瘢痕切除后修复头皮缺损

C.应用显微毛发移植方法种植

D.应用簇状毛发移植方法种植

E.瘢痕分期切除

题型:不定项选择

患者,女,25岁。产后乳汁甚少,乳汁稀薄, * * 柔软无胀感,面色少华,倦怠乏力,纳可,寐安,二便调,舌质淡,苔薄白,脉细弱。

其诊断为()

A.产后血劳

B.乳痈

C.产后血晕

D.产后郁冒

E.缺乳

题型:不定项选择

糖尿病微血管病变主要包括________及________。

题型:不定项选择

Statuses are wonderful human inventions that enable us to get along with one another and to determine where we "fit" in society. In our everyday lives whenever we meet people, we always try to judge them in terms of their statuses. For example, we must judge whether the person in the library is a reader or a librarian, whether the telephone caller is a friend or a salesman and so on.

Our statuses often vary with the people we meet, and change through life. Most of us can, at very high speed, assume(表现出) the different statuses that various situations require. Much of social communication consists of recognizing and selecting among proper statuses and allowing other people to assume their statuses in relation to us. This means that we fit our actions to those of other people, based on a constant mental process of assessment and understanding. Although some of us find the task more difficult than others, most of us perform it rather easily.

A status has been compared to ready-made clothes. Within certain limits the buyer can choose style and material. But an American is not free to choose the clothes of a Chinese peasant or that of a Hindu prince. We must choose from among the clothing presented by our society.

Furthermore, our choice is limited to a size that will fit, as well as by our wallet. Having made a choice within these limits, we can have certain changes made. But apart from small adjustments, we tend to be limited to what the stores have on their shelves. Statuses too come ready-made, and the range of choice among them is limited.

小题1:According to the writer, people often assume different statuses______.

A.in order to distinguish themselves from others

B.in order to better recognize other people

C.as their mental processes change

D.as the situation changes小题2:In the last sentence of the second paragraph, “it” refers to “___

A.constant mental process

B.selecting one’s own statuses

C.recognition of other people’s statuses

D.fitting our actions to those of other properly小题3:What can be the best title for this text?

A.Proper Relations.

B.Limited Choices.

C.Judgment of Statuses.

D.Comparison of Clothes.

题型:不定项选择

紫外线照射禁用于()

A.骨软化症

B.红斑性狼疮

C.急性湿疹

D.慢性湿疹

E.肾功能衰竭

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