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【单选题】
如果I/O设备与存储设备间的数据交换不经过CPU来完成,则这种数据交换方式是( )。A.
程序查询方式
B.
中断方式
C.
DMA方式
D.
外部总线方式
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反馈参考答案：
举一反三
【判断题】"The clock winds up at the back." In this sentence, "winds" belongs to the type of intransitive verbs to transitive verbs.
A.
正确
B.
错误
【简答题】1 a river there was a very narrow(窄的) bridge. One day a goat was crossing this bridge, just at the middle of the bridge he met another goat. There was no room for them to pass. "Go back," said one goa...
【简答题】Last month, the public address system at Earl's Court subway station in London was ordered to get the noise down. Passengers, it seems, had had enough of being told the blindingly obvious: "Stand back...
【简答题】()被誉为大兴安岭佳肴中的三大珍品。A. 犴鼻 B紫貂 C熊掌 D鹿尾 E马鹿
【简答题】机构运动简图是 的简单图形A. 用简单的线条和规定的符号代表构件和运动副，并按一定比例绘制各运动副的相对位置，因而能说明机构各构件间相对运动关系
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