• 2021-04-14 问题

    数组a=(80,A,90,B,78,A)是

    数组a=(80,A,90,B,78,A)是

  • 2021-04-14 问题

    【单选题】序列80 70 12 90 30 60 85 78 40 30 采用快速排序,第二趟的结果为 A. 30 70 12 40 36 60 78 80 85 90 B. 12 30 70 40 36 60 78 80 85 90 C. 12 30 40 70 36 78 60 80 85 90 D. 12 30 70 36 40 60 78 80 85 90

    【单选题】序列80 70 12 90 30 60 85 78 40 30 采用快速排序,第二趟的结果为 A. 30 70 12 40 36 60 78 80 85 90 B. 12 30 70 40 36 60 78 80 85 90 C. 12 30 40 70 36 78 60 80 85 90 D. 12 30 70 36 40 60 78 80 85 90

  • 2022-06-08 问题

    78×78×78×……×78(1995个78)的积的个位上的数字是几?() A: 8 B: 4 C: 2 D: 6

    78×78×78×……×78(1995个78)的积的个位上的数字是几?() A: 8 B: 4 C: 2 D: 6

  • 2021-04-14 问题

    脑外伤(traumatic brain injury , TBI)

    脑外伤(traumatic brain injury , TBI)

  • 2022-05-29 问题

    查询选修了a001号课程的学生的最高成绩() A: select cid, max(grade) from course where cid=’a001’ group by cid B: select cid,max(grade) from student where cid=’a001’ group by cid C: select cid, max(grade) from sc where cid=’a001’ group by cid D: select cid, max(grade) from student group by cid having cid=’a001’

    查询选修了a001号课程的学生的最高成绩() A: select cid, max(grade) from course where cid=’a001’ group by cid B: select cid,max(grade) from student where cid=’a001’ group by cid C: select cid, max(grade) from sc where cid=’a001’ group by cid D: select cid, max(grade) from student group by cid having cid=’a001’

  • 2022-06-11 问题

    统计选修了a001课程的学生的平均成绩( ) A: select cid,avg(grade) from student group by cid having cid=’a001’ B: select cid,avg(grade) from student where cid=’a001’ group by cid C: select cid,avg(grade) from course where cid=’a001’ group by cid D: select cid,avg(grade) from sc where cid=’a001’ group by cid

    统计选修了a001课程的学生的平均成绩( ) A: select cid,avg(grade) from student group by cid having cid=’a001’ B: select cid,avg(grade) from student where cid=’a001’ group by cid C: select cid,avg(grade) from course where cid=’a001’ group by cid D: select cid,avg(grade) from sc where cid=’a001’ group by cid

  • 2022-06-07 问题

    按课程号分类,统计相应的选课人数() A: select cid, count(distinct sid) from sc group by cid B: select cid, count(*) from student group by cid C: select cid, count(distinct cid) from sc group by cid D: select cid, count(distinct sid) from student group by cid

    按课程号分类,统计相应的选课人数() A: select cid, count(distinct sid) from sc group by cid B: select cid, count(*) from student group by cid C: select cid, count(distinct cid) from sc group by cid D: select cid, count(distinct sid) from student group by cid

  • 2022-06-12 问题

    在碎石沥青混凝土路面施工过程中,其具体组成有()。 A: 粗集料含量6%~10% B: 矿粉6%~10% C: 粗集料含量69%~78% D: 油石比5%左右 E: 矿粉69%~78%

    在碎石沥青混凝土路面施工过程中,其具体组成有()。 A: 粗集料含量6%~10% B: 矿粉6%~10% C: 粗集料含量69%~78% D: 油石比5%左右 E: 矿粉69%~78%

  • 2021-04-14 问题

    【单选题】假设订单表 orders 用于存储订单信息, cid 代表客户编号, money 代表单次订购额,现要查询每个客户的订购次数和每个客户的订购总金额,则下列() SQL 语句可以返回正确的结果。 A. select cid,count(distinct(cid)),sum(money) from ordersgroup by cid B. select cid , count(distinct(cid)) , sum(money) fromorders order by cid C. select cid , count(cid) , sum(money) from orders orderby cid D. select cid , count(cid) , sum(money) from orders groupby cid

    【单选题】假设订单表 orders 用于存储订单信息, cid 代表客户编号, money 代表单次订购额,现要查询每个客户的订购次数和每个客户的订购总金额,则下列() SQL 语句可以返回正确的结果。 A. select cid,count(distinct(cid)),sum(money) from ordersgroup by cid B. select cid , count(distinct(cid)) , sum(money) fromorders order by cid C. select cid , count(cid) , sum(money) from orders orderby cid D. select cid , count(cid) , sum(money) from orders groupby cid

  • 2022-07-25 问题

    在闪点测定整个试验期间,试样以的速率升温,且搅拌速率为() A: 5(℃/min)~6(℃/min)、90(r/min)~120(r/min) B: 6(℃/min)~7(℃/min)、90(r/min)~120(r/min) C: 5(℃/min)~6(℃/min)、90(r/min)~100(r/min) D: 6(℃/min)~7(℃/min)、90(r/min)~100(r/min)

    在闪点测定整个试验期间,试样以的速率升温,且搅拌速率为() A: 5(℃/min)~6(℃/min)、90(r/min)~120(r/min) B: 6(℃/min)~7(℃/min)、90(r/min)~120(r/min) C: 5(℃/min)~6(℃/min)、90(r/min)~100(r/min) D: 6(℃/min)~7(℃/min)、90(r/min)~100(r/min)

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