(46) A long-held view of the history of the English colonies that became the United States has be...

查看本题答案

包含此试题的试卷

国家统考科目《问答集》真题及答案点击查看

你可能感兴趣的试题

以下九道小题使用的数据表如下当前盘当前目录下有数据库大奖赛dbc其中有数据库表歌手dbf评分db

DELETE myview VIEW DELETE myview DROP myview VIEW DROP VIEW myview

增加在缺词处加一个漏词符号∧并在此符号下面写出该加的词删除把多余的词用斜线\划掉修改在错的词下划一横

建立一个视图salary该视图包括了系号和该系的平均工资两个字段正确的SQL语句是【】

CREATE VIEW salary AS系号,AVG(工资)AS平均工资 FROM 教师；GROUP BY系号 CREATE VIEW salary AS SELECT系号,AVG(工资)AS平均工资FROM教师；GROUP BY系号 CREATE VIEW salary SELECT系号,AVG(工资)AS平均工资FROM教师；GROUP BY系号 CREATE VIEW salary AS SELECT系号,AVG(工资)AS平均工资FROM教师；GROUP BY系号

44.Thecountryis统治byelectedrepresentativesofthepeop

Manager:MayIhelpyouMadam?Customer:YesI’msorrytotro

—WhendidtheterribleearthquakeinJapanhappen?—Ithapp

on; in at; on at; in on; on

CentralParkOutsideamongthetreeswatchthewildlife—bo

WhenBondstoppedandlookedbackalong46thstreetheobser

most people on the sidewalk were on the same side as himself no one suddenly turned into a doorway a man was looking into the windows of a store no one wiped his face with a handkerchief

WhenBondstoppedandlookedbackalong46thstreetheobser

most people on the sidewalk were on the same side as himself no one suddenly turned into a doorway a man was looking into the windows of a store no one wiped his face with a handkerchief

如图△ABC与△DEF位似位似中心为点O且△ABC的面积等于△DEF面积的则ABDE=.

CentralParkOutsideamongthetreeswatchthewildlife—bo

删除视图salary的命令是【】

DROP salary VIEW DROP VIEW salary DELETE salary VIEW DELETE salary

CentralParkOutsideamongthetreeswatchthewildlife―bo

CentralParkOutsideamongthetreeswatchthewildlife-bo

关系模式RUF其中U={CTHISG}F={CS→GC→TTH→IHI→CHS→I}关系模式R