2. Multiple choice questions: (There is only one best answer for each small question, please choose the correct option; ***20 questions, 2 points for each question, ***40 points)

A, operating system and database relationship system B, system software and application software

C, application software and operating system D, system software and operating system

(2), the computer can directly identify and process the language is (C) (2 points)

A, assembly language b, natural language c, machine language d, high-level language

(3) The representation of data in the computer is (2) (2 points)

A, octal b, decimal c, binary d, hexadecimal

(4), computer virus can lead to computer failure (D) (2 points)

A. computer equipment b, computer chip c, computer component d and computer program

(5) As the saying goes, "The old almanac can't be understood, and the old map is a mistake", reflecting the information with (B) (2 points).

A, transitivity b, timeliness c, authenticity d, value relativity