包过滤防火墙技术的运作方式是什么?

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问题:

包过滤防火墙技术的运作方式是什么?

考点:临床执业医师防火墙技术防火墙技术题库
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摘除白内障后采用高度正球面镜片进行视力矫正,下面叙述错误的是

A.可有效改善视力

B.戴用后可产生环形暗点

C.它可使物像放大20%~35%

D.周边视野正常

E.可用以双眼白内障摘除术后

题型:问答题 简答题

第三部分:阅读理解(共一节,满分32分)

第一节阅读理解(共16小题;每小题2分,满分32分)

阅读下列短文,从每篇短文后所给各题的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

Nearly all the tourists who come to southeast France make a tour to Monaco(摩纳哥), too. Lying near the French-Italian border, Monaco is not part of France, but a separate principality(公国), though it is surrounded by its greatest neighbour.

Monaco became a principality in the 16th century after being owned by a family member of a certain Italian king. The French and Italians, however, soon came to “protect” it one after another, until 1861, when it became its own master again.

Facing the blue Mediterranean(地中海), Monaco is mainly made up of two cities, Monaco, where the palace of the prince(王子) stands, and Monte Carlo(蒙特卡洛), which is a wonderful place for tourists. Every year, around 500,000 people from all parts of the world come to Monaco, nearly 25 times as much as its population.

Believe it or not, Monaco has no soldiers or policemen of its own. Law and order is kept by French police, and French stands for it in its foreign affairs, even the money used in Monaco is franc, too.

56. Monaco is ___________ .

A. another name for Monte Carlo                             B. mostly visited by French tourists

C. surrounded by France                                  D. more related to Italy than to France

57. Which is the right order that tells the history of Monaco?

a. became a principality                      b. controlled by the Italians

c. became a principality again                 d. under the protection of French

A. a c b d                    B. b a c d                     C. c d b a                     D. a b d c

58. Which of the following is TRUE?

A. The national income of Monaco depends mainly on France.

B. Monaco is famous for having no soldiers or policemen of its own.

C. Monaco does not have a seat in the UN because it is too small a country.

D. Monte Carlo City seems more important for the existence of this principality.

59. The Head of Monaco is ___________ .

A. the King                                                     B. the President of France 

C. a member of the royal family(王室)          D. the Emperor

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到2007年底,全国有10多个省市地方政府,在本地人大代表和政协委员的建议和督促下,相继出台并实施了限制使用塑料购物袋的规定。在总结各地方实践经验的基础上,国务院发布了《关于限制生产销售使用塑料购物袋的通知》(简称“限塑令”)。对此下列认识正确的是  

①人大代表针对塑料购物袋危害环境的问题向人大提交议案,行使了提案权  

②人大代表对政府保护环境、执行国家法律政策的过程进行了有效的监察和督促,行使了国家权力机关成员对政府部门的质询权  

③政协委员向政府建言献策,为科学决策和民主决策作出了贡献  

④政府部门履行了保护环境的公共职能  

A.①②③

B.②③④

C.①③④

D.①②④

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下列物质属于共价化合物的是

A.H2SO4

B.BaCl2

C.Na2SO4

D.I2

题型:问答题 简答题

简述飑锋与冷锋的区别。

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