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【简答题】
SELECT语句中用户根据自己的需要来设置查询条件,按条件进行查询。查询的结果必须满足查询条件。( )子句可以用来指定查询条件.
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参考答案:
举一反三
【单选题】Dorothy worked alongside him, in the beginning, unitil he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowers, and the housework.
A.
gave up
B.
offered
C.
took
D.
reconsidered
【单选题】Dorothy worked alongside him, in the beginning, until he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowers, and the housework.
A.
give up
B.
offered
C.
took
D.
reconsidered
【多选题】描述统计内容包括
A.
统计数据收集方法
B.
数据加工处理方法
C.
统计数据显示方法
D.
数据分布特征的概括
E.
抽样推断方法
【单选题】Dorothy worked alongside him, in the beginning, until he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowerers, and the housework.
A.
gave up
B.
offered
C.
took
D.
reconsidered
【单选题】Dorothy worked alongside him, in the beginning, until he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowers, and the housework.
A.
(a) gave up
B.
(b) offered
C.
(c) took
D.
(d) reconsidered
【单选题】字符型常量的定界符不包括
A.
单引号
B.
双引号
C.
花括号
D.
方括号
【多选题】问题:描述统计内容包括
A.
统计数据收集方法
B.
数据加工处理方法
C.
统计数据显示方法
D.
数据分布特征的概括
E.
抽样推断方法
【单选题】Dorothy worked alongside him, in the beginning, until he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowers, and the housework.
A.
gave up
B.
offered
C.
took
D.
reconsidered
【多选题】描述统计内容包括( )
A.
统计数据搜集方法
B.
数据加工处理方法
C.
统计数据显示方法
D.
数据分布特征的概括
E.
抽样推断方法
【判断题】视频驱动(Video Drive,简称VD)方式是指摄像机将视频信号电平输出到自动光圈镜头的内部,再由其内部的驱动电路输出控制电压使镜头的光圈调整电机转动。视频驱动自动光圈接口使用3个针:电源正、视频、接地。
A.
正确
B.
错误
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