题目内容

____ variables have the same time duration as automatic variables.

A. Static
B. Register
C. Extern
D. Global

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____ is a high-speed storage area physically located in the computer’s processing unit.

A reserved variable
B. RAM
C. A register
D. A stack

____ variables may be declared as members of the static or extern storage class.

A. Local
B. Global
C. Automatic
D. Register

The purpose of the ____ storage class is to extend the scope of a global variable declared in one source code file into another source code file.

A. auto
B. static
C. extern
D. register

The same variable name cannot be declared and used in more than one function.

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