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【单选题】
利用因式分解简便计算57×99+44×99-99正确的是 ( )
A.
99×(57+44)=99×101=9999
B.
99×(57+44-1)=99×100=9900
C.
99×(57+44+1)=99×102=100098
D.
99×(57+44-99)='99' ×2=198
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SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# ORDER BY 2 DESC HAVING COUNT( * ) >=4
B.
SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# HAVING COUNT( * ) >=4 ORDER BY 2 DESC
C.
SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 HAVING COUNT ( * ) >=4 GROUP BY S# ORDER BY 2 DESC
D.
SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 ORDER BY 2 DESC GROUP BY S# HAVING COUNT( * ) >=4
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【单选题】有三个表,即学生表S、课程表C和学生选课表SC,它们的结构如下:S(S#,SN,SEX,AGE,DEPT)C(C#,CN)SC(S#,C#,GRADE)其中,S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程 号,CN为课程名,GRADE为成绩。检索选修 4 门以上课程的学生总成绩(不统计不及格的课程),并要求按 总成绩的降序排列出来。正确的 SELECT 语句是( ...
A.
SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# ORDER BY 2 DESC HAVING COUNT ( * ) >=4
B.
SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# HAVING COUNT ( * ) >=4 ORDER BY 2 DESC
C.
SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 HAVING COUNT ( * ) >=4 GROUP BY S# ORDER BY 2 DESC
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【单选题】基于这样的三个表,即学生表 S、课程表 C 和学生选课表 SC,它们的结构 如下:S(S#,SN,SEX,AGE,DEPT)C(C#,CN)SC(S#,C#,GRADE)其中,S#为学号,SN 为姓名,SEX 为性别,AGE 为年龄,DEPT 为系别,C#为课程 号,CN 为课程名,GRADE 为成绩。检索选修 4 门以上课程的学生总成绩(不统计不及格的课程),并要求按总成绩的降序排列出来。正确的...
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SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# ORDER BY 2 DESC HAVING COUNT ( * ) >=4
B.
SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# HAVING COUNT ( * ) >=4 ORDER BY 2 DESC
C.
SELECT S# , SUM ( GRADE ) FROM SC WHERE GRADE>=60 HAVING COUNT ( * ) >=4 GROUP BY S# ORDER BY 2 DESC
D.
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【单选题】学生课程数据库有三个表,即学生表S、课程表C和学生选课表SC,它们的结构 如下:S(S#,SN,SEX,AGE,DEPT)C(C#,CN)SC(S#,C#,GRADE)其中,S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程 号,CN为课程名,GRADE为成绩。检索选修 4 门以上课程的学生总成绩(不统计不及格的课程),并要求按 总成绩的降序排列出来。正确的 SELEC...
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B.
SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 GROUP BY S# HAVING COUNT( * ) >=4 ORDER BY 2 DESC
C.
SELECT S#, SUM ( GRADE ) FROM SC WHERE GRADE>=60 HAVING COUNT ( * ) >=4 GROUP BY S# ORDER BY 2 DESC
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C.
“利润分配- 未分配利润”账户
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【单选题】2 4 .各损益类账户期末应结转至( ) 账户中。
A.
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