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The Internet is becoming important in our daily life. How much do you know about it? What is the Internet? The Internet is a large, worldwide collection of computer networks. A network is a small group of computers put together. The Internet is a collection of many different networks from all over the world. These networks are called the Internet. Once you have learned to use the Internet, you can have a lot of interest on the World Wide Web. What is the World Wide Web? The World Wide Web has been the most popular development of the Internet. The Web is like a big electronic book with millions of pages. These pages are called homepages. You can find information about almost anything in the world on these pages. For example, you can use the Internet instead of a library to find information for your homework. You can also find information about your favourite sport or film star, talk to your friends or even do some shopping on the pages. Most pages have words, pictures and even sound or music. What is email? Electronic mail (Email) is a way of sending messages to other people. It's much quicker and cheaper than sending a letter. If you want to use email, you must have an email address. This address must have letters and dots and an “@” (meaning “at”). This is what an address looks like: email@star.net. Write a message, type in the person's email address, and then send the message across the Internet. People don't need to use stamps, envelopes or go to the post office since the invention of the Internet. Quick, easy and interesting, that's the Internet!
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【单选题】在絮凝池设计中,一般要求絮凝过程中速度梯度由大到小,主要原因是下列哪项 。
A.
防止形成的较大絮凝体破碎
B.
增加絮凝体相互碰撞机会
C.
减少流体搅拌功率
D.
增加流体剪切力
【判断题】按管理层次分类,物流信息可分为战略层信息、战术层信息和操作层信息。
A.
正确
B.
错误
【单选题】肘关节脱位复位后需悬吊胸前几周
A.
1周
B.
2周
C.
3周
【多选题】可作为第二信使的物质有
A.
cGMP
B.
DAG
C.
IP3
D.
PKA
【多选题】按管理层次,物流信息可分为()。
A.
管理层信息
B.
控制层信息
C.
作业层信息
D.
固定信息
【单选题】可作为第二信使的物质是
A.
B.
C.
D.
【判断题】教练员的领导功能与作用有四个: 决 策 功 能 、组 织 功 能 、沟 通 功 能 、激 励 功 能。
A.
正确
B.
错误
【判断题】由三个串联起来的开关来控制一盏电灯,电灯的亮与灭和三个开关的闭合和断开之间的对应关系为或逻辑关系。 ( )
A.
正确
B.
错误
【判断题】平面汇交力系和平面平行力系是平面任意力系的特殊力系
A.
正确
B.
错误
【单选题】根据《南方电网公司营销业务对账作业指导书》,财务提供资金到账信息的风险点不包括()。
A.
财务人员提供重复资金到账的信息
B.
客户进账单位信息填写错误
C.
财务部门未能在月末及时完成资金到账信息
D.
营销管理信息系统运行不正常
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