根据法的阶级本质和经济基础对其所作的分类被称为（ ） A．法的历史类型 B．法的体系

王师傅需对一批货物进行打包，原计划每小时打包30件，6小时可以完成，实际每小时比原计划多打包20%，实际打包这批货物比原计划提前几小时？

材料一：2009年2月28日，温 * * * * 与广大网友进行了一次倾心的交谈， * * 对每一个现实而直言的话题都回答得认真而坦诚。他说：“我一直认为群众有权利知道政府在想什么。做什么，并且对政府的政策提出批评意见，政府也需要问政于民、问计于民。”

（1）“群众有权利知道政府在想什么、做什么，并且对政府的政策提出批评意见”。这里的“权利”是指哪些权利

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材料二：各级政府及其工作人员，为人民生产生活尽职尽责，但也不乏一些腐败分子，损害了党和政府形象。2007年9月13日，国家预防腐败局成立，并被列入国务院直属机构序列，实质是变机构 * * 为全民倡廉，即发挥人民民主对权力的制约和监督。

（2）结合所学知识说明，为了使民主监督得到切实保障，公民该怎样行使监督权？

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某城域网拓扑结构如图1所示。如果该路由器R1接收到一个源IP地址为192.168.1.10、目的IP地址为192.168.3.20的IP数据报，那么它将把此IP数据报投递到U地址为（）的路由器端口上。

A．192.168.66.1

B．192.168.66.2

C．192.168.67.1

D．192.168.67.2

Vienna was one of the music centers of Europe during the classical period, and Haydn, Mozart, and Beethoven were all active there. As the (1) of the Holy Roman Empire (which included parts of present-day Austria, Germany, Italy, Hungary, Czech and Slovakia), it was a (2) cultural and commercial center (3) a cosmopolitan character. Its population of almost 250,000 (in 1800) made Vienna the fourth largest city in Europe. All three (4) masters were born elsewhere, but they were (5) to Vienna to study and to seek (6) . In Vienna, Haydn and Mozart became close friends and influenced each other’s musical (7) . Beethoven traveled to Vienna at sixteen to play for Mozart; at twenty-two, he returned to study with Haydn.

Aristocrats from all over the Empire spent the winter in Vienna, sometimes bringing their private (8) . Music was an important part of court life, and a good orchestra was a (9) of prestige. Many of the nobility were excellent musicians.

Much music was heard in (10) concerts where aristocrats and wealthy commoners played (11) professional musicians. Mozart and Beethoven often earned money by performing in these intimate concerts. The nobility (12) hired servants who could (13) as musicians. An advertisement in the Vienna Gazette of 1789 (14) : " Wanted, for a house of the gentry, a manservant who knows how to play the violin well. "

In Vienna there was also (15) music, light and popular in (16) . Small street bands of wind and string players played at garden parties or under the windows of people (17) to throw (18) money. Haydn and Mozart wrote many outdoor entertainment (19) , (20) they called divertimentos or serenades. Vienna’s great love of music and its enthusiastic demand for new works made it the chosen city of Haydn, Mozart and Beethoven.

2（）

A.romantic

B.bustling

C.integrated

D.antique

通风机的效率是指通风机的（）功率与输入功率之比。