题目内容

按测度水平，变量可分为哪几类？举例说明。

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If American students do not hand in their assignments before the deadline， they willface the risk of getting low or even no grades for their work.
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If you are going to be more than a few minutes late for an appointment in America， youshould call your friend to inform. him of your lateness.
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普查名词解释

管理者对某一情况进行分析，从而提出行动方案。因此，他需要做以下工作：(1)分析评价各方案；(2)确定决策目标；(3)选择满意方案并实施；(4)认识和分析问题；(5)拟定备选方案。正确的分析思路和程序应该是()。

A. (5)(3)(4)(1)(2)
B. (4)(2)(5)(1)(3)
C. (5)(4)(2)(1)(3)
D. (4)(5)(1)(2)(3)