软磁盘存储器是一种辅助存储器设备，软盘驱动器在寻找数据时，(13)。软盘加上写保护后，对它可以进行的操作是(14)。

Viruses usually have two phases to their execution, the infection phase and the(75)phase. The later phase is optional, since stone viruses simply reproduce.

(74)isn't a type of transmission medium used for LANs.

A(73)is used to communicate with another computer over telephone lines.

Multimedia is the combination of computer and(72)technology.

In the RGB color spaces, each pixel on the screen has a corresponding RGB value which consists of()components.

In C language,(70)is a collection of one or more variables, possibly of different types, grouped together under a single name for convenient handling.

A stack protocol can be used for(69).

A(68)program is usually described as a program written in high-level language.

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