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【单选题】
所谓()是指将一个以上的作业放入主存,并且同时处于运行状态,这些作业共享处理机的时间和外围设备。A.
多重处理
B.
多道程序设计
C.
实时处理
D.
并行执行
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举一反三
【简答题】Most people his failure was the result of his lack of preparation. But in fact, it was because of his carelessness.
【简答题】curiosityassumechallengeattaingiantdespairembraceresponsibilitycareerboast4. Most people _________ his failure was the result of his lack of preparation. But in fact, it was because of his carelessnes...
【单选题】In fact, it was recently suggested that fraud now is “endemic in many scientific disciplines and in most countries” and may _________ the credibility of scientific research.
A.
underlying
B.
underscore
C.
undermine
D.
undertake
【简答题】下列叙述中属于描述铁的化学性质的是（ ） A．铁在高温下加热到1535℃时变成铁水 B．铁是热和电的良导体 C．铁质软并有良好的延展性 D．铁在潮湿的空气中易生锈
【单选题】下列叙述中属于描述铁的化学性质的是( )
A.
铁在高温下加热到1535℃时变成铁水
B.
铁是热和电的良导体
C.
铁质软并有良好的延展性
D.
铁在潮湿的空气中易生锈
【单选题】下列各设备中，全部属于计算机输出设备的一组是（ ）。
A.
显示器，键盘，喷墨打印机
B.
显示器，绘图仪，打印机
C.
鼠标，扫描仪，键盘
D.
键盘，鼠标，激光打印机
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