题目内容
电子商务活动常常涉及资金的转移和流动，其中(38)。
查看答案
搜索结果不匹配？点我反馈
更多问题
营业税是按营业额乘以营业税税率确定的,其中建筑安装企业营业税税率为a,则计算公式为()。
用以计算投资利润率、资本金利润率及资本金净利润率等评价业绩和经营成果指标的报表是()。
以下属于购买性支出的是（）。
How does the developer of a large database system achieve(71)and data independence？ How does the developer make certain that stored items are(72)and do not simply disappear in the immensities of the database, as if in quicksand？
One solution is to set up a(73)system, in which all data (the internal level), all records and files (the conceptual level), and all user interfaces (the external level) are controlled by one central programming group. This may seem the most useful solution. But worldwide enterprises such as the meteorological and satellite tracking networks, IBM, and General Motors gather and record information at a very large number of locations. To stay flexible and avoid top - heaviness, such an organization might want to avoid excessive centralization.
A centralized system is(74), but it may not be responsive to user needs. This is particularly true in a large organization - the worldwide meteorological network, for example, Data-gathering methods in the Himalayas, the equatorial jungles are different in very possible way. It is reasonable to believe that the best choices for the corresponding data storage and access structures ought to be just as different. A centralized database system would not(75)such differences.
微信支付 
支付宝支付