题目内容

下列哪种酶以氧为受氢体催化底物氧化生成水?()

A. 丙酮酸脱氢酶
B. 琥珀酸脱氢酶
C. SOD
D. 黄嘌呤氧化酶
E. 细胞色素C氧化酶

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自上而下由中央政府负责编制、实施和评价的课程是()

A. 国家课程
B. 显在课程
C. 核心课程
D. 学科课程

把党的政治建设摆在首位。聚焦(),强化监督执纪问责,严把选人用人政治关、廉洁关、形象关,全面净化党内政治生态。

A. 政治立场
B. 政治原则
C. 政治担当
D. 政治纪律

Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them? ()

A. The two statements produce identical results.
B. The second statement returns a syntax error.
C. There is no need to specify DESC because the results are sorted in descending order by default.
D. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.

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