在Windows的许多应用程序的“文件”菜单中,下列关于保存文件的正确说法是() A

题型:单项选择题

问题:

在Windows的许多应用程序的“文件”菜单中,下列关于保存文件的正确说法是()

A.“保存”命令只能用原文件名存盘,“另存为”命令不能用原文件名存盘

B.“保存”命令不能用原文件名存盘,“另存为”命令只能用原文件名存盘

C.“保存”命令一般用原文件名存盘,“另存为”命令也能用原文件名存盘

D.“保存”和“另存为”命令都能用任意文件名存盘

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阅读理解。

     Another year is coming! Time to forget the past, have a new start and party!

     People started celebrating the New Year about 4,000 years ago in Egypt. But New Year's Day

wasn't on January 1 until 46 BC (公元前)!

     During that year, Julius Caesar, the leader of the Roman Empire, made a new calendar. It made

January1 become New Year's Day.

     Today, people celebrate the day in many different ways.

     In the US, people have parties on December 31, New Year's Eve. The biggest party is in Times

Square, New York.

     There, at 11:59pm, a ball drops slowly down one of the buildings. It hits the ground at 12am, lighting

a sign reading "Happy New Year". It also sets off fireworks.

     Denmark has the strangest celebrations. There, on New Year's Eve, people throw plates at their

friends' homes as a sign of friendship!

     The Spanish also celebrate the New Year strangely. At 12am everybody eats 12 grapes! Why?

Because they think the grapes will bring them good luck.

     Why don't you try eating some this New Year's Eve?

1. People started celebrating the New Year in _________.

A. Rome      

B. Denmark      

C. the US    

D. Egypt

2. People celebrate the New Year _________.

A. for thousands of years

B. in the same way

C. only in Rome

D. for Julius Caesar

3. People eat ________ to celebrate the New Year in Spain.

A. dumpling    

B. noodles    

C. grapes    

D. cakes

4. In ________, People throw plates at their friends' homes on New Year's Eve.

A. Spain    

B. Denmark    

C. Rome    

D. Egypt

5. Which one is NOT right about the passage?

A. In the US, people have parties on New Year's Eve.

B. New Year is the time to forget the past.

C. In Denmark people throw plates to bring them good luck.

D. People celebrate the New Year in different ways.

题型:单项选择题

如图所示装置,有洗气储气等用途。以下关于此装置实际应用的说法不正确的是

A.实验室排水法收集氢气,瓶内装满水,气体从B管通入

B.干燥氧气,瓶内装浓硫酸,气体从A管通入

C.用水将瓶中一氧化碳气体排除使用,从B管加水

D.瓶内加入澄清石灰水检验二氧化碳,气体最好从A管通入

题型:单项选择题

设计服务项目不仅要考虑客户需求,还要关注企业自身的需求,要考虑该服务项目对()的作用.

A.提高客户满意度

B.挖掘客户价值

C.实现经营目标

D.履行社会责任

题型:单项选择题

关于B—DNA双螺旋结构的叙述,错误的是

A.由两条反向平行的脱氧核苷酸链组成

B.碱基排列在螺旋内侧,磷酸与脱氧核糖在螺旋外侧

C.两条链间的碱基配对非常严格,即A—G、T—C配对

D.螺旋每旋转一周包含10.5个碱基对

E.两碱基之间的氢键是维持双螺旋横向稳定的主要化学键

题型:单项选择题

汽轮机启动时,暖机可以清除转子(),减小振动。

A.温升

B.轴向窜动

C.弯曲变形

D.热膨胀量

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