下面哪项不是良性肿瘤的特征() A.细胞分化好,细胞形态和结构与正常相似 B.多呈浸

题型:单项选择题

问题:

下面哪项不是良性肿瘤的特征()

A.细胞分化好,细胞形态和结构与正常相似

B.多呈浸润性生长

C.一般对机体无影响

D.一般不发生转移

E.一般生长较慢

考点:口腔颌面外科(医学高级)医学高级口腔颌面外科学(副高)押题密卷二
题型:单项选择题

尽管新制造的国产汽车平均油效仍低于新制造的进口汽车,但它在1996年到1999年间却显著地提高了。自那以后,新制造的国产汽车的平均油效没再提高,但新制造的国产汽车与进口汽车在乎均油效上的差距却逐渐缩小。 如以上论述正确,那么基于此也一定正确的一项是:( )

A.新制造的进口汽车的平均油效从1999年后逐渐降低

B.新制造的国产汽车的平均油效从1999年后逐渐降低

C.1999年制造的国产汽车的平均油效高于1999年制造的进口汽车的平均油效

D.1996年制造的进口汽车的平均油效高于1999年后制造的进口汽车的平均油效

题型:单项选择题

系统设计的主要活动是( )。

A.系统设计说明书的编写

B.系统实施进度和计划的规定

C.系统总体结构设计、详细设计

D.以上都是

题型:单项选择题

Jack’s friend Tony had recently gotten a tattoo (纹身), and Jack was so impressed by Tony’s bravery and his tattoo that he decided to get one too. Why do a lot of young people in North America get tattoos today Peer pressure, media influence, and personal expression are some of the common reasons.
The desire to be part of a group, to be accepted by one’s friends or peers, can have a great influence on what a person does. Sometimes, wearing a tattoo can be a sign that you belong to a certain group. Gangs often use special clothes and tattoos to identify their particular group. For example, in one gang all the members may wear green army jackets and have large "Xs" tattooed on their arms. It is not only gangs that have this type of special "uniform". Young people often belong to a certain group of friends. Some of these groups wear only brand-name clothes. Others wear tattoos. When a person’s friends are all doing something, such as getting a tattoo, that person is more likely to do the same thing, and get a tattoo too.
The media is another big influence behind the popularity of tattoos in North America. A wide variety of media images show tattoos. Tattoos can be seen on people appearing in commercials selling expensive cars. Famous sports heroes with tattoos are shown in magazines. Fashion models are often seen in magazines and on TV wearing designer clothes that show their bodies tattooed with detailed and colorful patterns. These media images link tattoos to ideas of wealth, success, and status. As a result, many people decide to get a tattoo for its fashion and status value.
It is not always the influence of other people or the media that results in a person getting a tattoo. Many people decide to wear tattoos in order to express their artistic nature, their beliefs, or their feelings -- in other words, to show their individuality. A musician in a rock band may get a tattoo of a guitar on the arm. Some environmentalists may tattoo pictures of endangered animals on their shoulders. Lovers may tattoo each others’ names over their hearts. A tattoo can be a public sign to show what is important in a person’s life.

Jack got a tattoo because of ______.

A. a desire to express himself
B. the influence of the media
C. the influence of friends
D. a desire to be fashionable

题型:单项选择题

某正弦交流电电流i=100sin314t安培,在0.02秒时电流的瞬时值为()安培。

A.0

B.100

C.100

D.50

题型:单项选择题

18岁女性,反复颜面及双下肢浮肿4个月,BP135/75mmHg,尿蛋白(+++),红细胞5个/HP,血红蛋白120g/L,血肌酐98μmol/L,BUN6.0mmol/L,血白蛋白28g/L。为明确诊断及指导治疗,下列哪项检查作为首选

A.经皮肾活检

B.静脉肾盂造影

C.腹部CT检查

D.尿路细胞学检查

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