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【单选题】
如下图所示,用二维表格来表示实体集以及实体之间联系的数据模型是:
A.
层次模型
B.
网状模型
C.
关系模型
D.
物理模型
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参考答案:
举一反三
【判断题】When an employee says, "I make less money at this company than I could earn at another company," he/she is reflecting the cognitive component of an attitude. ( )A. √B. ×
A.
正确
B.
错误
【单选题】如图所示,要求负载电压为 10V ,取U1=24V, 变压器副边电压有效值为 V 。
A.
10
B.
20
C.
40
【简答题】Capitals Co is considering an opportunity to produce an innovative component which, when fitted into motor vehicle engines, Will enable them to utilize fuel more efficiently. The component manufacturi...
【判断题】蹲苗就是通过适当控制土壤水分以使蔬菜作物根系扩展,同时控制地上茎叶徒长的一种有效措施。
A.
正确
B.
错误
【简答题】The findings of this study support the basic premise that the lexicon is an integral component in the construction of meaningful written text.
【单选题】悲恐证一般无( )
A.
胆怯易惊
B.
恐惧不安
C.
心悸失眠
D.
喜笑不休
E.
善悲喜哭
【简答题】A contract worth £4,800 is on offer to the company. The following information is relevant: · Labour time would amount to 300 hours · Material Cost would amount to £1,800 · A special component would be...
【多选题】RDD的操作有哪些
A.
Transformatio
B.
Accumulator
C.
Action
D.
Broadcast
【判断题】对长时间停放车辆, 每月要对蓄电池进行一次补充充电。
A.
正确
B.
错误
【简答题】Something big is happening to the human race, something that could be called the Great Transformation. The Transformation consists of all the changes that are occurring in human life due to advancing ...
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