某建筑安装公司存货计价采用加权平均法。某月1日账面结存A材料100件，单位成本3元；

亚马逊丛林中的雄性蓝蝶带有彩虹般的蓝色光辉，半公里外就能看到．其光辉如此强烈，有的竟能反射70％的蓝色光线，远远超过蓝色涂料的反射率．蓝蝶耀眼的光辉，原是一种警号，使别的雄性蓝蝶在远处就能知所趋避．蓝光越强，示警作用越显著．物竞天择，适者生存．亿万年的自然选择，使亚马孙蓝蝶翅膀有了如此奇妙的性能．这种性能，早在一百多年前就被人发现了，但其奥秘直到最近才被揭开．原来蓝蝶翅膀上覆盖着许多微小鳞片(就是触摸蝴蝶翅膀时会沾手的粉)，其表面有许多平行的脊状突起物．观察脊的截面，会发现其中包含着许多平行排列的羽状物．“羽毛”的主干两边生出若干分支，分支的长度沿主干从根到梢逐渐变短，其结构类似于人造的多层介质反射镜．人造多层介质反射镜的反射光有很强的方向性：对接近垂直入射的单色光线反射率极高，但对斜入射光线的反射率很低．令科学家们大吃一惊的是：蓝蝶翅膀的反光却是广角的，可以在很大范围内看到．这种奇妙性能缘于那些羽状物的分支并非完全位于同一平面内，而是各具略为不同的倾斜角，使反光的视角大为增加．蓝蝶的翅膀还具有颜色选择性．其羽状物的尺寸．恰好能增强蓝光的反射，而且其分支越多，反光就越强．一种仅有6到8个分支的蓝蝶翅膀，仍比蓝色涂料的反光率高出一倍以上．蓝蝶翅膀的反射光颜色随不同的视角略有变化，从蓝色到紫色，一直延伸到人眼看不见但蓝蝶能看见的紫外线．目前人们正在研究蓝蝶的反光机理，想仿造应用．比如改善公路上的路标，改善电脑的液晶显示器．军事部门感兴趣的是仿蓝蝶翅膀的反光结构，将之用于可随环境变换色彩的新型迷彩伪装；服装公司则设想，仿蓝蝶翅膀做出的具有特殊反光性能的衣料，将使时装展示台上更加异彩纷呈．最重要的应用当然是有价证券的防伪，因为再先进的复印机也无法印造出具有精细立体结构的蓝蝶翅膀来．纽约州立大学的一位昆虫学家说：“蓝蝶做到了工程师们试着做却未能成功的事．”的确，正在研究中的人造模仿物，在光学性能上仍无法与蓝蝶的翅膀相比．

根据文意，下列推断不合理的一项是______．

A．从飞越亚马逊丛林的小飞机上，有可能看到蓝蝶发出的蓝色闪光

B．人造的多层介质反射镜，其反射光不够强烈，是因角度所限

C．亚马逊丛林中美丽的蓝蝶，可能成为制造假钞罪犯的“克星”

D．有关蝴蝶的传说，可能因蓝蝶反光的奥秘被揭开而更添浪漫色彩

试述游标卡尺的读数原理？

搬运病情较轻、自己不能活动而体重较重患者时下列正确的是（）

A.采用三人搬运法

B.平车头端与床尾成锐角

C.甲、乙、丙三人站在床的一边

D.甲托患者头、颈部，乙托肩、背、腰部，丙托臀、小腿部

E.三人同时托起，将患者放于平车中间

Experts say that agriculture provides fourteen percent of the world's greenhouse gas emissions each year．The gases released include carbon dioxide, a major cause of global warming．

Twenty-one nations around the world recently joined forces to better understand and prevent greenhouse gas emissions from farms．The Global Research Alliance on Agricultural Greenhouse Gases was launched at the United Nations conference on climate change．The meeting took place in Copenhagen, Denmark last month．

Agricultural experts blame a number of farm activities for producing greenhouse gases．For example, animal waste and cattle digestive systems release methane （甲烷，沼气） gas．Fertilized soil and the burning of crop waste also release harmful gases into the air．Experts say some methods of farming ?turning the soil to prepare for planting ?also release harmful carbon dioxide．

An official of the European Commission's Directorate General for Research says agricultural greenhouse gas emissions can be cut．Maive Rute suggests feeding animals a diet designed to reduce emissions．

The new agricultural research group says protecting against global warming is only part of its purpose．It says the world also needs to develop better farming methods to feed growing populations in poor countries．

United States Agriculture Secretary Tom Vilsack said no one single nation can fight agricultural greenhouse gas emissions and increase food production at the same time．This is why the alliance is important for combining resources and finding new ones．

The United States Department of Agriculture will increase spending on farm emissions research by ninety million dollars over the next four years．The total will reach one hundred thirty million dollars．The U．S．D．A．will share the research with other countries in the Global Research Alliance on Agricultural Greenhouse Gases and support researchers from developing countries that belong to the alliance．Money from the Borlaug Fellowship program will let the researchers study agricultural climate change with American scientists．

Mister Vilsack said that just as climate change has no borders, there should be no borders for research．

72．In Paragraph 4, Maive Rute recommends _____．

A．increasing food production

B．changing cattle digestive systems

C．developing better fanning methods

D．giving animals the food meant to produce fewer emissions

73．The underlined word "alliance" in Paragraph 6 probably means _____．

A．Action or state being joined together

B．An agreement signed between countries

C．A program or project set up for a research

D．An organization formed for different goals

74．How much has the U．S．D．A．spent on farm emissions research so far?

A．130 million dollars．           B．220 million dollars．

C．40 million dollars．                D．90 million dollars．

75．The purpose of the passage is to ____．

A．suggest a total ban on farm activities

B．introduce Copenhagen conference held last month

C．appeal to more countries to cut agricultural emissions

D．inform readers of the major cause of global warming

处理器不能直接访问的存储器是（ ）

A．寄存器

B．高速缓冲存储器

C．主存储器

D．光盘