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【简答题】
概念结构设计是对用户需求进行进一步抽象、归纳,并形成独立于 和有关软、硬件的概念数据模型的设计过程。
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举一反三
【单选题】The effect of free surface on initial stability depends upon（）.
A.
the amount of liquid in the compartment
B.
the dimensions of the liquid surface and the vessel's displacement
C.
only the length of the compartment
D.
the vertical position of the liquid in the vessel
【简答题】无双亲的,孤儿的
【单选题】When the government spends more, the initial effect is that
A.
aggregate demand shifts right.
B.
aggregate demand shifts left,
C.
aggregate supply shifts right
D.
aggregate supply shifts left
【单选题】Other things the same, when the government spends more, the initial effect is that ( )
A.
aggregate demand shifts right.
B.
aggregate demand shifts left.
C.
aggregate supply shifts right.
D.
aggregate supply shifts left.
【单选题】A severe drought has damaged this year's lettuce crop. The initial effect on the lettuce market is a
A.
decrease in the demand for lettuce.
B.
decrease in the supply of lettuce.
C.
decrease in both the demand and supply of lettuce.
D.
rightward movement along the demand curve for lettuce.
【单选题】The initial effect of an increase in the money supply is to
A.
increase the interest rate.
B.
increase the price level.
C.
decrease the price level.
D.
decrease the interest rate.
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