CR的调谐处理参数包括（）。 A.调谐类 B.旋转量 C.旋转中心 D.调谐移动量

下表是“唾液淀粉酶对淀粉的消化作用”实验步骤，根据此表回答下列问题：

(1)将A、B试管放入37℃水中恒温的原因是：37℃是人体进行________的最适宜温度。

(2)变成蓝色的是_________试管。淀粉被分解的是_________试管。(填A或B)

(3)A试管在实验中起_________作用。

阅读理解。

     Centuries ago, many houses in a bad state in London were torn down to make way for new streets.

However, the construction project was put off for quite some time, and the foundations of the houses

pulled down were left in the open.

     One day, a team of scientists arrived, only to discover that, on the patches of the foundations blocked

from sunlight for years, was growing wild plants, dotted with little flowers. Puzzlingly, some species

were native to Mediterranean countries only.

     Most of the destroyed houses had been built during the Roman invasion. Weighed down by piles of

bricks and stones year after year, the seeds possibly brought here in Roman times had almost no hope

for survival. However, once bathed in the sun, they came alive.

     The little seeds were so fragile yet so persevering. Though bricks piled on them many years, they

still remained alive. Once exposed to sunshine and rain, they immediately exhibited signs of life. A little

seed, lying underground for hundreds of years, still cherished the hope to live on. But what if a man is

stuck in a similar situation?

     One year, a British expedition was marching through the boundless Sahara sands. With the sun

hanging overhead, hot waves of sandy winds were blowing against their faces like hot iron grains. The

men were suffering both thirst and anxiety. The last drop of water was gone. Just then, the captain

brought out a water bottle, saying, "There is still one bottle of water left. However, no one is to drink

any before going out of the desert."

     The bottle of water lent them confidence to get through the desert, and embodied their hope to live

on. It was handed down the line of people. This changed into firmness the despair registered on the

men's faces. Finally the men walked out of the desert, shaking off the threat of death. Tears out of joy

welled out, and trembling hands were trying to screw off the bottle cap and let out the water, which

had supported them spiritually. Now, however, it was sand pouring out-a bottleful of sand!

     Was it a bottle of sand that rescued them from the burning sun and the boundless desert? No, it was

their firm faith, like a seed that had taken root in their hearts and that finally let them out of the awful

desert.

1. What made the team of scientists confused according to the passage? 

A. Some wild plants on the patches of the foundations.

B. Some foundations of many old houses.

C. Many houses in a poor state.

D. Some little seeds.

2. When the British expedition was marching through the Sahara, _____.

A. they had one bottle of water left

B. they had the last drop of water

C. the weather was anything but tolerable

D. the experienced thirst, anxiety and hunger

3. The underlined sentence in Paragraph 6 probably means _____.

A. the bottle of water changed the firmness on the men's faces into despair

B. the bottle of water transformed the men's desperation into confidence

C. feeling heavy made the men strong rather than weak

D. feeling heavy changed the men's hope into disappointment

4. What is the main idea of the passage?

A. Telling a lie is sometimes necessary.

B. Man can overcome any difficulty whatever it is.

C. A man can do no more than he can.

D. Where there is a seed, there is a hope.

列入城建档管理部门档案接收范围的工程( )。

A．建设单位可自行对工程档案进行预验收，再请城建档案管理部门参加工程竣工验收
B．建设单位请城建档案管理部门对工程档案进行预验收，再组织工程竣工验收
C．建设单位请城建档案管理部门组织工程竣工验收
D．建设单位请城建档案管理部门对工程档案进行预验收，取得认可文件后，再组织工程竣工验收

2008年8月8日北京举办了第29届夏季奥运会。其实早在1908年《天津青年》杂志就提出了“奥运三问”：中国何时派运动员参加奥运会？何时能夺得奖牌？何时能在中国举办奥运会？100年前“奥运三问”的提出实际上反映了（）

A.国际奥林匹克运动尚未开展

B.清政府尤其重视体育事业

C.中国闭关锁国，中外交流困难

D.人民对国衰民弱的现状强烈不满

江西凤凰光学仪器(集团)公司的前身是江西光学仪器总厂。它是我国少数几家技术实力雄厚的照相机生产厂家之一，其生产的凤凰系列照相机，因镜头质量优良、机械性能卓越而备受消费者青睐，是少数叫得响的国产照相机之一。

尤其是“江光”在20世纪80年代开发投产的凤凰205相机，曾经风靡全国。尽管当时的最高年产量达到了23万架，但商品仍然供不应求，销售商要排队等候提货。然而，好景不长，80年代末期，一种来自境外的塑料壳全自动照相机(俗称“傻瓜”相机)，洪水般地涌入我国。大量走私相机的涌入，使我国照相机行业面临灭顶之灾。因为“傻瓜”相机不仅操作简单，而且价格低廉，正好迎合了中国消费者的口味。在这股汹涌的“傻瓜”洪水冲击下，国产相机几乎全军覆没，几家幸存的企业也是苟延残喘。

“江光”自然也未能幸免。在短短几年时间里，凤凰205相机由最高年产量25万架跌至7万架：“江光”由年创造利税过千万元到亏损超过500万元。

面对这样的环境和形势，“江光”顺应潮流，向市场推出了自己的“傻瓜”相机——凤凰602、604。但是由于商品的内在质量和外观设计都无法与国外或合资的同类商品相媲美，商品销售不出去，大批凤凰“傻瓜”相机积压。“江光”不仅没有借“傻瓜”相机走出困境，反而变得更加困难。

凤凰在“傻瓜”相机市场上受挫，使“江光”面临新的选择，目标市场定位问题被重新提到议事日程上来：到底是集中力量在竞争日益激烈的“傻瓜”相机市场抢一口饭吃，还是重新寻找目标顾客，并开发新商品来满足他们的需求

经过对市场和企业自身条件认真分析和比较，“江光”公司明智地决定退出“傻瓜”相机市场，另辟蹊径。从当前的市场环境来看，尽管“傻瓜”相机的目标市场是需求巨大的普通消费者(非专业的相机使用者)，但是这个市场的竞争也日趋白热化。尤为重要的是，在“傻瓜”相机的竞争中，国内相机生产厂家处于明显的劣势。因为全自动照相机需要高质量的电子元件和塑料配件，换句话说，需要相关产业较高水平的支持，而我国在这方面与国外尚存在一定的差距，因此，生产出来的“傻瓜”相机很难与国外同类商品相抗衡。而从“江光”自身条件来看，它的光学镜头和机械制造技术有其独到之处。比如，“江光”生产的镜头，其质量完全可以和代表国际最高水准的德国的蔡斯镜头相媲美；“江光”生产的纵走式钢片快门，也曾令日本一家大企业眼红，主动要求与“江光”合作。另外，内地的劳动力成本也较低。就凭着镜头、快门以及廉价劳动力这三条，“江光”在生产照相机的基础上就此国外厂家有优势。

综合分析上述的各种利弊后，“江光”公司毅然决定退出“傻瓜”相机市场，以自己的技术优势来为专业摄影人员和一些具有一定专业知识的摄影爱好者服务。这个目标市场虽然不大，但相对稳定，而且随着人们生活水平的提高呈不断扩大的趋势。他们最为关注的是相机质量(镜头和机械性能)和性能价格比，这正是“江光”的优势所在。当时，国际相机专业市场上正流行一种金属壳单镜头反光照相机，“江光”决定以此为突破口，打入国际专业相机市场。

根据以上资料，请回答下列问题：

“江光”公司毅然决定退出“傻瓜”相机市场，以自身的技术优势为专业摄影人员和一些具有一定专业知识的摄影爱好者服务。这种市场定位的方法是（）。

A．初次定位

B．重新定位

C．对峙定位

D．回避定位