employee表中lastname列保存顾客姓,firstname列保存顾客的...

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【单选题】

employee表中lastname列保存顾客姓,firstname列保存顾客的名,现在,需要查询顾客的姓名的组合,例如,lastname列中的”张“,同一行firstname列中的”“,查询结果应该返回”张“,则正确的查询语句应该是( )

select lastname,firstname from employee

select * from employee order by lastname,firstname

select lastname+firstname from employee

select lastname and firstname from employee

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参考答案：

举一反三

【单选题】Although the author thinks Mr. Big and Solitaire are badly drawn characters, he thinks ______.

Fleming enjoyed writing Live and Let Die more than his other books

this is the most attractive of his books because he enjoyed writing it

this is the most charming and energetic of his books

this is the book that most holds the attention of the reader

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【单选题】She greets (打招呼) Mr. Smith because she ______

thinks he is her husband (丈夫)

thinks he is the father of her own children

thinks be is the father of two students of bets

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【简答题】The disadvantage Mr. Hood thinks is the waste of ______.

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【单选题】若变量已正确定义,有以下程序段 int a=3,b=5,c=7 if(a>b) a=b c=a if(c!=a) c=b printf('%d,%d,%d/n',a,b,c) 其输出结果是

程序段有语法错

3,5,3

3,5,5

3,5,7

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【判断题】Mr Schulz thinks the price of the assembly coffee table is too high.

正确

错误

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【多选题】基于32mm系统的功能部件的互换条件

功能部件尺寸约束

功能部件连接孔的定位约束

功能部件的结构约束

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【单选题】若变量已正确定义,有以下程序段 int i=0; do { printf(“%d,”,i); } while(i++); printf(“%d\n”,i); 其输出结果是 ()

0,0

0,1

1,1

程序进入无限循环

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【单选题】下列哪项不是粪便标本采集和运送中必须注意的

下列哪项不是粪便标本采集和运送中必须注意的

排便困难者可用直肠拭子采集

标本拭子置于有保存液的试管内送检

副溶血弧菌引起腹泻的粪便可置于卡－布运送培养液中

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【单选题】Mr. Smith thinks running is _________ than gymnastics.

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