血小板在凝血过程中的主要作用是A.表达并释放血管性血友病因子 B.提供因子Ⅲ参与外源

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问题:

血小板在凝血过程中的主要作用是

A.表达并释放血管性血友病因子

B.提供因子Ⅲ参与外源性凝血过程

C.激活凝血因子Ⅻ

D.提供血小板因子Ⅲ

考点:普通考研西医综合西医综合
题型:单项选择题

关于静脉说法哪项正确()

A.管壁相对较动脉厚

B.浅静脉与浅动脉伴行

C.所有的静脉都有静脉瓣

D.体循环静脉分深浅两种

E.管腔比相应动脉小

题型:单项选择题

(26分)阅读材料,回答问题。

材料一:利比亚北临地中海(下图),海岸线长达1900余千米,全境95%以上地区为沙漠和半沙漠。利比亚是北非重要产油国,除石油外,还有铁、钾、锰、磷酸盐、铜等资源;利比亚有2700多年的历史,有古罗马的斗技场遗址和其他朝代的古堡、宫苑、清真寺等名胜古迹,同时地中海沿岸,是夏季游览和疗养胜地,多年来都没有很好地开发利用。

材料二:进入2011年后,利比亚政局动荡加剧,为确保我国人员安全, 2011年2月23日开始我国政府通过海陆空多种途径将驻利比亚人员分批安全撤离。

材料三:利比亚石油生产占国民生产总值的50-70%,原油出口占出口总值的95%以上。该国农业非常落后,可耕地面积仅占全国总面积的1.2%,粮食需大量进口。

(1)图中A城市(31°12′N,29°15′E)是埃及的亚历山大,我国首批从利比亚撒出人员先抵达该城,再从该城乘飞机返回北京。飞机起飞时当地时间(区时)为2月23日13时25分,此时北京时间是2月23日        。(2分)

(2)利比亚海岸线漫长,但沙漠、半沙漠广布,主要原因是         。(4分)

(3)B城市此季节(2月)的气候特征是       ,其所在区域自然带是        ,该自然带在全球的分布规律是       。(6分)

(4)从自然条件考虑,利比亚发展农业生产首先要解决的问题是       ;根据该国自然资源条件可以发展______________、_______________工业。(6分)

(5)利比亚事件发生后,对国际石油生产和消费的影响可能有哪些。(8分) 

题型:单项选择题

说出灭弧单元结构图(图E-78)中各元件的名称。

 

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In one sense, we can trace all the problems of the American city back (91) a single starting point: we Americans don’t like our cities very much.
That is, on the (92) of it, absurd. After all, more than three-fourths of us now live in cities, and more are (93) to them every year. We are told that the problems of our cities are (94) more attention in Washington, and scholarship has discovered a whole new (95) in urban studies.
(96) , it is historically true: in the American psychology, the city has been a basically suspect institution, (97) with the corruption of Europe, totally lacking that sense of spaciousness and innocence of the (98) and the rural landscape.
I don’t pretend to be a scholar on the history of the city in American life. But my thirteen years in public (99) , first as an officer of the U. S. Department of Justice, then as Congressman, and now as Mayor of the biggest city in America have taught me (100) too well the fact that a p antiurban attitude (101) consistently through the mainstream of American thinking. Much of the (102) behind the settlement of America was in reaction (103) the conditions in European industrial centers and much of the theory (104) the basis of freedom in America was linked directly to the availability of land and the perfectibility of man outside the corrupt influences of the city.
What has this to do with the predicament of the modern city I think it has (105) to do with it. For the fact is that the United States (106) the federal government, which has historically established our national priorities, has simply never thought that the American city was "worthy" of (107) —at least not to the (108) of expending any basic resources on it.
Antipathy to the city predates the American experience. When industrialization (109) the European working man into the major cities of the continent, books and pamphlets appeared (110) the city as a source of crime, corruption, filth, disease, vice, licentiousness, subversion, and high prices.

A.grasping

B.receiving

C.gathering

D.collecting

题型:单项选择题

叶互生,呈心形,全缘,表面密生腺点,具鱼腥气的药材是()

A.蒲公英

B.锁阳

C.鱼腥草

D.半枝莲

E.泽兰

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