最适用于贵金属抛光的材料是() A.氧化锡 B.氧化铝 C.金刚石 D.氧化铁

题型:单项选择题 A1/A2型题

问题:

最适用于贵金属抛光的材料是()

A.氧化锡

B.氧化铝

C.金刚石

D.氧化铁

考点:口腔医学主治医师口腔材料学口腔材料学题库
题型:单项选择题 A1/A2型题

正常前列腺液中白细胞应少于 ()

A.1个/HP

B.3个/HP

C.5个/HP

D.8个/HP

E.10个/HP

题型:单项选择题 A1/A2型题

脑出血的病因主要是______。

题型:单项选择题 A1/A2型题

福州城内南后街两旁从北到南依次排列的十条坊巷被称为“三坊七巷”。在上世纪末,全国旧城改造热中,三坊七巷因破损严重被列为福州市房地产开发改造项目。近年来,福州市委、市政府认识到福州是一座具有两千多年历史的文化名城,三坊七巷是这座千年古城历史和文化的精髓所在。许多当地居民迫切希望政府把三坊七巷作为福州民风民俗的代表,进行修复,保留住三坊七巷这个福州明清古建筑最集中的留存地。福州市政府及时调整思路,决定终止三坊七巷的房地产开发改造项目,由开发、改造转为整体保护、修复。

福州市在对三坊七巷的保护和修复中,贯彻实施国家文物保护法和相关法规,及时组织编制了《三坊七巷历史文化街区保护规划》《三坊七巷文物保护管理细则》等一系列地方性规范文件,加大保护与整治力度。在征集居民拆迁意见、听取专家修复建议的基础上,福州市政府于2006年出资18亿元,迈出三坊七巷保护与拆迁工程的步伐。随着,政府投入逐年加大,带动了三坊七巷周边的商业、服务业等蓬勃发展,吸引了不少客商到福州投资兴业。福州市政府还将保护修复工程支出主要投向民生,使三坊七巷的改造不仅成为物质文化和非物质文化的保护工程,更是改善市民的居住条件、生活条件的安居工程、民心工程。

福州市保护和修复三坊七巷中,大力修复的不仅仅是古老的建筑,更是对于历史文化传承的修复,弘扬福州传统特色民俗文化,在文物古迹上作文章:举办“老城保护与整治”三坊七巷国际学术研讨会,通过《三坊七巷宣言》;推出以三坊七巷为主的多条城市旅游线路;福州市有关部门联合在大中小学师生中开展“文中、画中、歌中、影中”三坊七巷活动;举办三坊七巷民俗文化节;福建省非物质文化遗产博览苑在三坊七巷揭牌;2009年6月三坊七巷以高票获选“中国十大历史文化名街区”,等等。如今,修缮如“旧”的三坊七巷古街区吸引大批海内外游客慕名参观,为日后三坊七巷的保护修复提供了充足的资金保证。可以说,福州市三坊七巷的保护修复工程是“功在当代,利在千秋”的历史工程。

请你谈谈福州市中小学生积极参加“文中、画中、歌中、影中”三坊七巷活动的文化意义。

题型:单项选择题 A1/A2型题

Congress makes the laws in the United States. It has two parts, which are more or less equal in power. They are known as the House of Representatives and the Senate. The House of Representatives is larger than the Senate whose 100 members (two from each state) serve for six years. The 435 members of the House are elected every two years, and the number from each state is determined by the population of the state. For example, California, which has a large population, has 43 representatives, while the State of Nevada has only one.
The House and Senate are divided into small groups which take care of special matters such as education or foreign affairs. The most important work of Congress is often done in these groups, which are called subcommittees.
According to the Constitution of the United States, a senator must be at least 30 years old and he must have been a citizen of the United States for nine years at the time of his election. To be elected to the House a person must be 25 years old and must have been a United States citizen for seven years. At the present time, members of Congress include businessmen, farmers, teachers, and especially lawyers. In general, senators are better known than representatives because they are fewer in number and serve for a longer time. Many American presidents served in Congress before they became president.

To be elected to the Senate a person must______.

A. be at least 25 years old
B. be at least 30 years old
C. have been a citizen for seven years
D. be a lawyer

题型:单项选择题 A1/A2型题

供电系统,电力电缆直埋于非冻土地区时,电缆埋置深度应为电缆外皮至地面深度不得小于0.7m;当位于车行道或耕地下时,不宜小于( )m。

A.0.8
B.0.9
C.1
D.1.2

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