定点数做乘法运算时，通常可采用原码乘法和(10)。原码乘法中，乘积的符号位是由被乘数的符号位X和乘数的符号位Y通过(11)运算来获得的。

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.

(70)

(69)