题目内容

计算机病毒是 (52) 。

A. 设计不完善的计算机程序
B. 已被破坏的计算机程序
C. 编译有错误的计算机程序
D. 以危害系统为目的的特殊的计算机程序

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封闭式基金和某些特殊的开放式基金均可以在证券交易所市场挂牌交易()

A. 对
B. 错

股票是有价证券,《中华人民共和国公司法》规定,股票由公司董事长签名,公司盖章()

A. 对
B. 错

在SNMPv1管理框架中,如果代理需要向管理站报告一个异常事件,则代理发出trap报文。以下事件中不属于异常事件的是 (57) 。

A. 检索的变量不存在
B. 报文认证失败
C. 通信链路失效
D. 系统重新启动

The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not been at all constant. According to paleo-ecologist Edward Deevey, the past million years show three momentous changes. The first, a rapid increase in population around one million B. C., followed the innovations of tool-making and tool-using. But when the new power from the use of tools had been exploited, the rate of world population growth fell and became almost stable. The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated. These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth--population can be expected in the long mn to adjust to productivity. Which of the following is NOT TRUE according to the passage

A. Human population expands at a straight upward trend.
B. Population growth has shown ups and downs in demographic history.
C. Population growth can not be regarded as a social failure.
D. Increase in population is related to productivity.

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