题目内容

What do you learn about John from the conversation?

A. He sounds nervous and unsociable.
B. He sounds boring and stupid.
C. He sounds forgetful and nervous.
D. He sounds humorous and interesting.

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What is Mike doing?

A. Showing sympathy.
B. Expressing opinions.
C. Offering comments.
D. Giving advice.

能够将当前目录中的f1.txt文件压缩成f1.txt.tar.gz的命令是

A. tar cvf f1.txt f1.txt.tar.gz
B. tar czvf f1.txt f1.txt.tar.gz
C. tar czvf f1.txt.tar.gz f1.txt
D. tar cvf f1.txt.tar.gz f1.txt

将一组文件及目录汇集并备份生成一个文件的过程称为。

文件压缩是将多个文件及目录按照某种存储格式保存到一个文件中,并且所占磁盘存储空间比其中所有文件总和要少。

A. 对
B. 错

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