题目内容

人机界面是数据库应用系统的一个重要组成部分,人机界面设计与用户的关系非常密切。关于人机界面设计,下列说法错误的是

A)人机界面设计时,应使用户感觉系统运行始终处于用户的控制之下,人机界面应该向用户及时反馈,保持人机界面与用户之间的双向交流
B)当系统发生错误时,人机界面应为用户提供有意义的反馈信息,有时可以提供截屏等功能,使用户可以了解错误,并及时向技术人员反馈问题
C)良好的人机界面应能容忍用户使用过程中发生的操作错误,并能够方便地从错误中恢复
D)设计人机界面可采用原型迭代法,首先进行用户界面详细设计,然后与用户不断讨论,改进设计方案

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So many of the productions currently to be seen on the London stage are concerned with the more violent aspects of life that it is surprising to meet a play about ordinary people caught up in ordinary events. Thomas Sackville’s the Visitor is just such a play—at least, on the surface. It seems to stand well outside the mainstream of recent British drama. In fact the surface is so bland that attention is constantly focused on the care with which the play has been put together, and the clarity with which its argument develops; it seems natural to discuss it in terms of the notion of "the well-wrought play". The story is about an unremarkable family evening in middle-class suburbia. The husband and wife have invited a friend to dinner. The friend turns up in due course and they talk about their respective lives and interests. During this conversation, in which the author shows a remarkable talent for writing dialogue which is entertaining and witty without being so sparkling as to draw too much attention to itself; the characters are carefully fleshed out and provided with a set of credible—if unremarkable—motives. Through innumerable delicate touches in the writing they emerge: pleasant, humorous, ordinary, and ineffectual. And if they are never made vibrantly alive in terms of the real world, one feels that this is deliberate; that the author is content to give them a theatrical existence of their own, and leave it at that. The story is about an unremarkable family evening in middle-class suburbia. The husband and wife have invited a friend to dinner. The friend turns up in due course and they talk about their respective lives and interests.

The line of demarcation between the adult and the child world is drawn in many ways. For instance, many American parents may be totally divorced from the church, or entertain grave doubts about the existence of God, but they send children to Sunday school and help them to pray. American parents struggle in a competitive world where sheer conning and falsehood are often rewarded and respected, but they feed their children with nursery tales in which the morally good is pitted against the bad, and in the end the good inevitably is successful and the bad inevitably punished. When American parents are in serious domestic trouble, they maintain a front of sweetness and light before their children. Even if American parents suffer a major business or personal catastrophe, they feel obliged to turn to their children and say, "Honey, everything is going to be all right." This American desire to keep the children’s world separate from that of the adult is exemplified also by the practice of delaying transmission of the news to children when their parents have been killed in an accident. Thus, in summary, American parents face a world of reality while many of their children live in a near-ideal unreal realm where the rules of the parental world do not apply, are watered down, or are even reversed. Thus, in summary, American parents face a world of reality while many of their children live in a near-ideal unreal realm where the rules of the parental world do not apply, are watered down, or are even reversed.

《刑法》第243条规定:“捏造事实诬告陷害他人,意图使他人受刑事追究,情节严重的,处三年以下有期徒刑、拘役或者管制;造成严重后果的,处三年以上十年以下有期徒刑。国家机关工作人员犯前款罪的,从重处罚。不是有意诬陷,而是错告,或者检举失实的,不适用前两款的规定。” 试分析该条法律规定。

如果DBAS用于数据安全性要求不高的一般场合,可将级别定位在______。

A)A级
B)B级
C)C级
D)D级

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