题目
● (74) is the foundation on which applications are built.
74)
A.User
B.Display
C.Printer
D.Operation system
第2题
● (74) is a single-user multi-task operating system.
(74)
A. MS-DOS
B. Windows
C.UNIX
D.Linux
第4题
试题(74)
Changes often happen in(74).
(74)
A.Initiating Process
B.Executing Process
C.Planning Process
D.Closing Process
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