【单选题】dept表和locations表的结构如下: dept表: Name Null? Type dept_id decimal(4) dept_name not null varchar(30) manager_id decimal(6) location_id decimal(4) city ...
A.
update dept set city=any(select city from locations)
B.
update dept set city=(select city from locations) where dept.location_id=locations.location_id
C.
update dept set city=(select city from locations where dept.location_id=locations.location_id)
D.
update dept set city=all(select city from locations) where dept.location_id=locations.location_id
【简答题】请提交你期中考试的PPT终稿。不交的本门课程成绩不及格,等着下学期补考。
【简答题】A time capsule buried by Apple founder Steve Jobs 30 years ago has been discovered after its location was long forgotten.In 1983, the young tech innovator was attending a conference in Aspen when he a...
【单选题】()操作是由与短消息中心SMC相连接的互通MSC发送给移动用户MS当前所在的MSC的,与短消息中心SMC相连接的互通MSC收到短消息中心发给被叫移动用户短消息后,就向被叫移动用户MS当前所在的MSC发送此操作,以便将短消息发送给被叫移动用户MS。
A.
Provide Roaming Number
【单选题】采用GPS技术进行地籍碎部测量,在以基准站为中心方圆( )km内,不需要变换基准站,也不需要图根控制点。
【单选题】面对游客的特别要求,下列导游人员处理方法不妥当的是( )。
A.
用餐开始后,游客以菜品不合口味为由要求换餐,导游人员予以满足,费用由游客自理
B.
游客要求导游人员为其提供色情活动项目,导游人员断然拒绝并进行合理解释
C.
外国游客出境前,请求中方全陪为其转递一些书籍和食品给当地的中国朋友,全陪予以拒绝
D.
游客希望亲友随团时,在车位及餐厅、订房等相关条件允许的前提下,导游人员征得其他游客的同意后,为其办理入团手续
【单选题】启动windows后,出现在屏幕上的整个区域称为( )。
【单选题】dept表和locations表的结构如下: dept表: Name Null? Type dept_id number(4) dept_name not null varchar2(30) manager_id nubmer(6) location_id number(4) city ...
A.
update dept set city=any(select city from locations)
B.
update dept set city=(select city from locations) where dept.location_id=locations.location_id
C.
update dept set city=(select city from locations where dept.location_id=locations.location_id)
D.
update dept set city=all(select city from locations) where dept.location_id=locations.location_id
【单选题】Windows 7启动后,出现在屏幕上的整个区域称为( )。
【单选题】启动Windows后,出现在屏幕上的整个区域称为 ( )