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【单选题】
是根据字段的不同取值来查找所需要的信息。A.
选择查询
B.
操作查询
C.
参数查询
D.
SQL查询
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举一反三
【单选题】What caused the appearance of the 'gray culture' phenomenon?
A.
An increasing proportion of older people within the total population.
B.
Older people are regarded as important consumers of leisure goods and services.
C.
Some sociologists have begun to study the cultural implications of an aging population.
D.
All of the above.
【判断题】The sample proportion is an unbiased estimator of the population proportion.
A.
正确
B.
错误
【单选题】In general, the higher the proportion of resources devoted to technological research in an economy, the
A.
greater will be current consumption.
B.
faster PPF will shift outward.
C.
faster PPF will shift inward.
D.
more bowed out the shape of the PPF will be.
【简答题】优化财政支出结构属于财政实现（ ）的职能的手段。
【判断题】Market share refers to the proportion of the total market held by an organisation.
A.
正确
B.
错误
【单选题】An increase in the parameter c, the proportion of money individuals wish to hold as currency, will tend to cause which of the following?
A.
an increase in the monetary base (H)
B.
a reduction in H
C.
an increase in the money multiplier
D.
a reduction in the money multiplier
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