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【单选题】
After dithering about like this in the cold for two or three minutes, Billy decided that he would walk on and take a look at The Bell and Dragon before making up his mind. He turned to go.And now a queer thing happened to him. He was in the act of stepping back and turning away from the window when all at once his eye was caught and held in the most peculiar manner by the small notice that was there. BED AND BREAKFAST, it said. BED AND BREAKFAST, BED AND BREAKFAST, BED AND BREAKFAST. Each word was like a large black eye staring at him through the glass, holding him, compelling him, forcing him to stay where he was and not to walk away from that house, and the next thing he knew, he was actually moving across from the window to the front door of the house, climbing the steps that led up to it, and reaching for the bell.He pressed the bell. Far away in a back room he heard it ringing, and then at once —it must have been at once because he hadn’t even had time to take his finger from the bell button—the door swung open and a woman was standing there.Normally you ring the bell and you have at least a half-minute’s wait before the door opens. But this dame was like a jack-in-the-box. He pressed the bell—and out she popped! It made him jump.
A.
mystery
B.
animal story
C.
romance
D.
historical narrative
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【单选题】SELECT子句中可以出现一些聚合函数, 求一列中的最大值的是 ()
A.
MAX(DISTINCT|ALL 字段名 )
B.
AVG(DISTINCT|ALL )
C.
SUM(DISTINCT|ALL字段名)
D.
MIN(DISTINCT|ALL字段名 )
【单选题】SQL Server聚合函数有最大、最小、求和、平均和计数等,其中计数函数是( )。
A.
max
B.
avg
C.
sum
D.
count
【单选题】AM和FM广播的传输距离().
A.
相等
B.
FM和AM远
C.
AM和FM远
D.
因环境影响无法确定
【简答题】SQL Server聚合函数有最大、最小、求和、平均和计数等,其中求最大值的函数是 ,求最小值的函数是 ,求和函数是 , 求平均的函数是___ _ ___,计数函数是 。
【单选题】在mysql聚合函数中,求得最大值的函数是?
A.
MAX
B.
MIN
C.
AVG
D.
COUNT
【简答题】聚合函数中,__________是求最大值函数。
【简答题】聚合函数中,求最大值是采用_______函数。
【单选题】以下哪个行为在实训室是不合适的?
A.
与同学一起进行TVM结账
B.
与同学一起用一张单程票通过闸机
C.
与同学一起在票亭使用BOM
D.
阻止小王同学跳闸机
【简答题】如果要计算表中的行数,可以使用聚合函数_______________;如果对数据进行统计,求最大值的函数是_____________。
【单选题】在德国的 1899 年规划中将青岛市区的位置规划在胶州湾的原因不包括以下哪个选项?
A.
位置正当胶州湾入口
B.
东面为内海胶州湾
C.
北面有山体挡住冬季来自东北和西北的寒风
D.
南面有青岛湾,由两侧伸入海中的团岛和汇泉角控制着湾口
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