(74) is a single-user multi-task operating system．(74)

A． MS-DOS

B． Windows

C．UNIX

D．Linux

[单选题]（ ）is a single-user multi-task operating system .A．MS-DOSB.WindowsC.UNIXD.Linux

[单选题]The user must interact with the (74) in order to accomplish task．A．PrinterB．memoryC．CPUD．operation system

[单选题] The user must interact with the (74) in order to accomplish task.(74)A． printerB． memoryC． CPUD． operating system

[单选题]It is pretty hopeless as a venue for opera, it took years to build, its architect was forced to resign and it was never properly finished inside. None of this matters. The Sydney Opera House, by the reclusive Danish architect Jorn Utzon, is the mothe

[单选题]An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.A . manoeuvring operationsB . bad combustionC . coolingD . mooring trial

[名词解释] Multi-ChannelAnalogInput：（）

[单选题]According to Task—based language approach，a task contains four components，t

[名词解释] hercules task

[单选题]Jim: I have a pair of tickets for an opera Saturday night. Would you like to go? Cindy: I don't think so. ______.A．I'm not too wild about operaB．I'm not too interested about operaC．I'm not very excited about operaD．I'm not very anxious about ope

[单选题] In multi-phase projects, the （） Project process closes out the portion of the project scope and associated activities applicable to a given phase.（）A．Scope B．Plan C．Close D．Control