题目内容

Local area networks are just used between friends and last for only a short time.

A. 对
B. 错

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According to the passage, to set up a LAN needs to consider the operating systems and automatical configurations at first, which seems quite complex.

A. 对
B. 错

The followig is a list of computer terms. After reading it, you are required to find the items equivalent to those given in Chinese below.

与同样尺寸参数的标准齿轮相比较，正变位齿轮的分度圆齿厚______。

A. 增大
B. 减小
C. 不变

在模数、齿数、压力角相同的情况下，负变位齿轮与标准齿轮相比较，下列参数的变化是：齿厚___；基圆半径_；齿根高____。