【单选题】车站相关作业完成时,车站人员向司机显示( ),显示位置为列车运行方向向前端第二个客室门的位置。
【单选题】— ____________ is it? — It's 10: 30. [ ]
【单选题】A: _____ is it? B: It's 11 : 30. [ ]
【单选题】电影《入殓师》中,主人公担任入殓师的最初原因是()。
【单选题】氧塘深度一般在( ) m左右,以使阳光能够透入塘底
【判断题】商品标准化的主要目的是促进商品经济的高速发展,保证以丰富的优质产品满足人们日益增长的物质和文化生活的需要,增强国际市场的竞争能力。标准化实施范围越广,标准化效果越显著。电子计算机作为标准化的有效工具被广泛地应用,使企业可以实现自动化管理。
【简答题】Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ3 NUMBER(3) SUBJ1, SUBJ2, and SUBJ3 indicate the marks (grades) obtained by a...
【单选题】Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine...
A.
The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject.
B.
The statement returns an error at the SELECT clause.
C.
The statement returns an error at the WHERE clause.
D.
The statement returns an error at the ORDER BY clause.