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【单选题】
在关系中能唯一标识关系中的每一个的属性称为( )A.
候选码(关键字)
B.
数据项
C.
主属性
D.
主属性值
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皮皮学刷刷变学霸
举一反三
【单选题】The manage suggested that the meeting ____ till next week.
A.
is postponed
B.
has been postponed
C.
was postponed
D.
be postponed
【单选题】Which is true of the time for exchanging the pre-appraisal form between the emplayee and the manage?
A.
At the same time three days before the appraisal interview.
B.
the employee submits it to his/her manager three days earlier.
C.
The line manager gives it to the employee three days earlier.
D.
The manager and the emplyee exchange the form during the appraisal interview.
【单选题】When the inspecting team said there was nothing illegal in the management of the company, the manager breathed deeply _____. [ ]
A.
with a relief
B.
at a relief
C.
in relief
D.
to his relief
【简答题】自动驾驶仪是一种什么装置？
【单选题】John thought he was when the manage asked him for the advice on the new product.
A.
something
B.
anything
C.
somebody
D.
anybody
【单选题】当一个进程处于____的状态时,称其为等待状态 I.它正等待输入一批数据 II.它正等着协作进程的一个消息 III.它正等分给它一个时间片 IV.它正等进入内存
A.
仅Ⅰ
B.
仅Ⅱ
C.
Ⅰ和Ⅱ
D.
Ⅰ、Ⅱ和Ⅲ
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