选项中选择“自动带出单价的单据”有调拨单，则下面说法错误的是（）。

A . 重新安装 B . 退出 C . 关闭 D . 重新启动

A . 教学媒体越高级、越先进，音乐教学效果越好 B . 教学媒体不但要选择合适，而且要使用得当，才能发挥教学媒体辅助教学的作用 C . 网络信息技术与音乐教学无关 D . 没有多媒体，音乐教学质量不可能高

A . 内生变量是非随机变量 B . 前定变量是随机变量 C . 外生变量是随机变量 D . 外生变量是非随机变量

A . A.电子邮件 B . B.静态网页 C . C.聊天室 D . D.BBS论坛

A . 1仓库现存量为10，2仓库现存量为20 B . 1仓库现存量为6，2仓库现存量为24 C . 1仓库现存量为14，2仓库现存量为20 D . 1仓库现存量为10，2仓库现存量为24

A . A.政府可以委托保险机构经办公共服务 B . B.政府可以直接购买保险产品和服务 C . C.政府可以指定企业购买保险产品和服务 D . D.政府可以对公益性保险服务给予一定的支持

A . 在教学评价前，让学生了解评价的内容 B . 评价要基于学生在实际任务中的表现 C . 评价活动在教学结束后开展 D . 学生对评价进程和质量承担责任

A . 它可以修复损坏的主引导记录 B . 它可以创建、删除和格式化分区 C . 它可以把基本磁盘更新为动态磁盘 D . 它可以启动和停止系统服务

A . A．是否容易把设计转换为程序 B . B．满足信息系统需要的编译效率 C . C．有良好的开发工具支持 D . D．技术越先进的程序设计语言越好

A . 操作的时候只需要在工作区域中单击，增加一个拐点，需要结束时双击鼠标 B . 优点是使用方便、操作简单，缺点是难以控制 C . 主要用于选择边界为直线、边界复杂的多边形的图案 D . 优点是选择比较精确，缺点是操作复杂

A . 拖动模式 B . 编辑模式 C . 默认模式 D . 放大镜模式

A . A、“扩大选择”指令是以现在所选择范围的颜色与色阶为基准，由选择范围接临部分找出近似颜色与色阶最终形成选区 B . B、“选择相似”是由全部图像中寻找出与所选择范围近似的颜色与色阶部分，最终形成选区 C . C、“扩大选择”和“选择相似”在选择颜色范围时，范围的大小是受“容差”来控制的 D . D、对于同一幅图像执行“扩大选择”和“选择相似”命令结果是一致的

A . 钢接地线的短时温波不应超过400℃ B . 铜接地线的短时温波不应超过350℃ C . 铝接地线的短时温波不应超过300℃ D . 钢接地线的短时温波不应超过380℃

A . 制单序时控制，则在制单时凭证号必须按日期顺序排列 B . 编号方式控制，则在制单时须手工输入编号 C . 资金及往来赤字控制，则在制单时，当现金、银行科目的最新余额出现负数时，系统将予以提示 D . 允许修改他人填制的凭证控制，则在制单时可修改别人填制的凭证

A . A、切片、模糊、锐化工具和减淡、加深、抓手工具 B . B、选框、套索、多边形套索、魔棒工具 C . C、橡皮擦、铅笔、喷枪、画笔、仿制图章以及图案图章工具 D . D、移动、椭圆、喷枪、缩放、裁切以及测量工具

A . 代发工资内部户单位卡片可用余额可退回单位结算账户 B . 修改单位协议时，业务类型、收付类型、内部结算账号、收款帐号四项内容不允许修改。 C . 办理代扣业务无需留存身份证件复印件 D . 办理代扣业务无需留存身份证件复印件

A . 出库跟踪入库属性的存货，其入库记录可以多次出库 B . 未选择该选项，发货单上如果指定了入库单号，则库存销售出库单上不可以修改 C . 选择该选项，发货单上如果指定了入库单号，则库存销售出库单上不可以修改 D . 选择该选项，发货单上如果指定了入库单号，则库存销售出库单上可以修改

A . 批注 B . 格式 C . 工作簿 D . 工作表

第一篇 Volunteers are being recruited(征募) to eat raw potatoes in the first human trials of a vaccine grown in genetically engineered vegetables. Researchers in Texas hope that people who eat the potatoes will be protected against common gut(肠，肠子) infections. They believe this technique could prove to be a cost-effective way of growing vaccines in developing countries where such diseases are still killers. Other researchers previously succeeded in using similar techniques to produce potential vaccines Now Hugh Mason and his colleagues at Texas A & M University(得克萨斯农业及机械大学) their plant vaccines on mice and plan to recruit 15 volunteers for a human trial. The team first tested the technique in tobacco plants. They took a strain of Escherichia coli(大肠杆菌) bacteria that causes food poisoning, and identified the part of the poison which binds to its victims gut cells. They then used a modified plant bacterium called Agrobacterium tumefasciens to transfer the segment of DNA which manufactures the binding protein into the tobacco plant. Under normal circumstances, these bacteria transfer packets of DNA into plant cells to force the plant to manufacture the nutrients they need. But in the modified bacteria, the DNA package includes the gene to pro- duce the binding protein. Once the foreign DNA segment was incorporated(结合，合并) into the tobacco's own DNA, the bacteria were killed off with antibiotics. Mason's team then grew these modified tobacco plants and found that they produced the E. coli binding protein. Proof of success came when the tobacco leaves were mashed up(捣碎) and squirted into the stomachs of mice. Mason says that within days the mice started producing specific antibodies to the E. coli poison, but suffered no ill effects from digesting the binding protein. Mason then produced genetically engineered potatoes and fed these to mice, with similar results. Mason's team have used plants to produce vaccines against a number of other infectious agents. For example, they have made a vaccine using a protein from the shell of the Norwalk virus, which causes diarrhoea(腹泻) in children. A third vaccine has also been produced in tobacco using a surface protein from the hepatitis B virus. But Mason says that so far they have only been able to produce small amounts of it in potatoes. Although a vaccine already exists against hepatitis B, a cheaper plant version could make mass immunisation(群众性免疫) possible. One problem with growing potatoes to produce vaccines is that cooking tends to destroy the protein component of the vaccine, so they must be eaten raw. Mason thinks that bananas may be a better option. "One banana could potentially produce a whole host of different vaccines," says Mason. The purpose of this text is______。 A. to prove that doctors don't like vegetables B. to amuse the reader by telling some funny things C. to describe how vegetables can grow vaccines for their own use D. to tell the reader about a cheaper way of growing vaccines

A．＜BR＞标记符用于定义文本从新的一行显示 B．＜BR＞标记产生一个空行 C．续多个＜BR＞可以产生多个空行的效果 D．＜BR＞是成对标记符 E． F．．是一些大型网站所喜欢的布局类型，优点是页面容纳内容多，信息量大 G． “国”字型 H． 拐角型 I． 标题正文型 J． 封面型

A．快选工具 B．椭圆形工具 C．魔术棒工具 D．套索工具

A．文明是一定的社会生产力发展水平的产物，是文化的高级阶段 B．文明与文化含义相近，前者偏重于内，而文化偏重于外 C．文明是一定文化精神的物化形态 D．人类文明现象尽管可以相近，但文化精神各不相同

A．不同的供应商 B．不同的采购组织 C．不同的公司 D．同一供应商不同的询价清单