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若用8位机器码表示十进制整数-127,则其原码表示为(),补码表示为()。 若用8位机器码表示十进制整数-127,则其补码表示为()。

A. 10000001
B. 11111111
C. 10111110
D. 11111110

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你单位委托培训机构对20名新同事进行为期4天的培训,但是培训机构说只能对10人进行2天的培训。你作为负责人,怎么处理?

B In choosing a friend, one should be very careful. A good friend can help you study. You can have fun together and make each other happy. Sometimes you will meet fair weather friends. They will be with you as long as you have money or luck, but when you are down, they will run away. How do I know when I have found a good friend I look for certain qualities of character, especially understanding, honesty and reliability. Above all else, I look for understanding in a friend. A good friend tries to understand how another person is feeling. He is not quick to judge. Instead, he tries to learn from others. He puts himself in the other persons place, and he tries to think of ways to be helpful. He is also a good listener. At the same time, however, a good friend is honest. He does not look for faults in others. He notices their good points. In short, a friend will try to understand me and accept me. Another quality of a friend is reliability. I can always depend on a good friend. If he tells me he will meet me somewhere at a certain time, I can be sure that he will be there. If I need a favor, he will do his best to help me. If I am in trouble, he will not run away from me. There is a fourth quality that makes a friend special. A special friend is someone with whom we can have fun. We should enjoy our lives, and we would enjoy our friendship. That is why I especially like friends who are fun to be with. A good friend likes the same things I like. We share experience and learn from each other. A good friend has a good sense of humor, too. He likes to laugh with me. That is how we share in the joy of being friends. And I know that he is looking for the same quality in me. When I meet someone who is reliable, honest, and understanding, I know Ive found a friend! Good friends need to .

A. always point out each others mistakes
B. be helped with money
C. understand each others feelings
D. have money or luck

At a basic level, cloud computing is simply a means of delivering IT resources as ().Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking,programming tools,even communication services and collaboration ()。Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, () distributed system resources,abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on ()“somewhere on the Intemet”and the application runs on both the "cloud servers”and the user’s browser.Both clouds and grids are built to scale horizontally very efficiently. Both are built to withstand failures of () elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What’s more, clouds expand the types ofresources available —— file storage, databases, and Web services —— and extend the applicability to Web and enterprise applications. Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking,programming tools,even communication services and collaboration ()。

A. computers
B. disks
C. machine
D. tools

JPEG图像编码标准可以支持()格式,其有损编码的核心算法是(),无损编码的核心算法是()。我们在图像处理软件中将图像另存为JPEG格式时,通常可以选择图像的重构质量,这是通过()环节进行调节的。 JPEG图像编码标准可以支持()格式。

A. 真彩色图像和伪彩色图像
B. 伪彩色图像和灰度图像
C. 灰度图像和黑白二值图像
D. 真彩色图像和灰度图像

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