题目内容

2012年以来,受国内外各种不确定性因素的影响,煤炭行业的发展进入了寒冬期,甲煤炭企业从定性和定量的角度,按照很好、较好、一般、较差4种不同的假设条件,预测了本*公司年度将面临的各种不确定因素,以及由此给企业带来的各种不同结果。甲煤炭公司采用的风险管理技术方法是()。

A. 敏感性分析法
B. 统计推论法
C. 情景分析法
D. 条件预测法

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摄氏温标是由以下哪位学者提出来的()。

A. 摄氏修斯
B. 开尔文
C. 阿累尼乌斯
D. 米靳

Examine the structure of the STUDENTS table: STUDENT_ID NUMBER NOT NULL, Primary Key STUDENT_NAME VARCHAR2(30) COURSE_ID VARCHAR2(10) NOT NULL MARKS NUMBER START_DATE DATE FINISH_DATE DATE You need to create a report of the 10 students who achieved the highest ranking in the course INT SQL and who completed the course in the year 1999. Which SQL statement accomplishes this task? ()

A. SELECT student_ id, marks, ROWNUM "Rank" FROM students WHERE ROWNUM <= 10 AND finish_date BETWEEN '01-JAN-99' AND '31-DEC-99 AND course_id = 'INT_SQL' ORDER BY mark DESC;
B. SELECT student_id, marks, ROWID "Rank" FROM students WHERE ROWID <= 10 AND finish_date BETWEEN '01-JAN-99' AND '31-DEC-99' AND course_id = 'INT_SQL' ORDER BY mark;
C. SELECT student_id, marks, ROWNUM "Rank" FROM (SELECT student_id, marks FROM students WHERE ROWNUM <= 10 AND finish_date BETWEEN '01-JAN-99' AND '31-DEC- 99' AND course_id = 'INT_SQL' ORDER BY mark DESC;
D. SELECT student_id, marks, ROWNUM "Rank" FROM (SELECT student_id, marks FROM students WHERE (finish_date BETWEEN '01-JAN-99 AND '31-DEC-99' AND course_id = 'INT_SQL' ORDER BY marks DESC) WHERE ROWNUM <= 10;
E. SELECT student id, marks, ROWNUM "Rank" FROM (SELECT student_id, marks FROM students ORDER BY marks) WHERE ROWNUM <= 10 AND finish date BETWEEN '01-JAN-99' AND '31-DEC-99' AND course _ id 'INT_SQL'

有关国防建设的行政法规,可以由共同()签署公布。

A. 国务院总理
B. 国家主席
C. 中央军事委员会主席
D. 国防部长

装运超限、超长货物以连挂车组装运时,发站应在货物运输票据上注明()字样。

A. 限速运行
B. 连挂车组不得分摘
C. 限速连挂
D. 连挂车组限速运行

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