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问题 多项选择题

随着我国城乡一体化的社会保障制度的实施，（）将进一步提高，这将有助于提高我国的消费水平。

A.社会保障的覆盖面

B.社会保障水平

C.社会福利

D.公共设施建设

答案

参考答案：A, B

多项选择题

防雷装置由以下部分组成（）。

A、接地线

B、接闪器

C、引下线

D、接地装置
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单项选择题

An analyst does research about asset classes. When an investor defines an asset class for the purpose of asset allocation, which of the following statements is most accurate The investor should ensure that assets in one class:（）

A. have high paired correlations with other asset classes and relatively homogeneous.

B. have low paired correlations with other asset classesand relatively heterogeneous.

C. have low paired correlations with other asset classesand relatively homogeneous.
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