题目
●An operating system is (74) .
(74) A. the highest layer of software
B. the lowest layer of software
C. the highest layer of hardware
D. the lowest layer of hardware
第2题
()is a single-user multi-task operating system .
A.MS-DOSB.WindowsC.UNIXD.Linux
第5题
A.System
B.application program
C.control unit
D.operating system
第6题
A.Router Operating Sytstem
B.Request of Service
C.React Operating System
D.Robot Operating System
第7题
A.Router Operating Sytstem
B.Request of Service
C.React Operating System
D.Robot Operating System
第8题
A.asic Operating System
B.usiness Operating Standard
C.usiness Operating System
D.rake Override System
第9题
A.Router Operating Sytstem
B.Request of Service
C.React Operating System
D.Robot Operating System
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