试题与答案

为了缓解全球气候变暖采取的有效措施是()①发展煤炭气化、液化技术,提高利用率②发展新

题型:单项选择题

题目:

为了缓解全球气候变暖采取的有效措施是()

①发展煤炭气化、液化技术,提高利用率

②发展新能源,改善能源结构

③禁止使用化石燃料,减少CO2排放

④植树造林,增加植被覆盖率

A.①②③

B.①②④

C.②③④

D.①③④

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, B, C, D, E

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题型:单项选择题

(71) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (72) for designing and constructing an improved system. (73) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (74) (75) is another such technique that integrates data and process concerns into constructs called objects.

(74)应选()。

A.PERT

B.DFD

C.ERD

D.UML

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