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【单选题】
为了完成一定的工序部分,一次装夹工件后,工件与夹具或设备的可动部分一起相对刀具或设备的固定部分所占据的每一个位置,称为( )。
A.
工序
B.
安装
C.
工位
D.
走刀
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【单选题】数据仓库所存储的数据,通常具有一定特点,下列哪些不属于其特点的?()
A.
经常修改数据项的值
B.
数据大都反映历史
C.
数据来源多样
D.
面向特定主题
【单选题】-I'm sorry. I at you. the other dayForget it. It was a bit out of control myself.
A.
shouldn't shout
B.
shouldn't have shouted
C.
mustn't shout
D.
mustn't have shouted
【单选题】Client: Hello. May I speak to Mr. Turner? Secretary: ______
A.
I'm sorry. He's at a meeting right now.
B.
Speaking, please.
C.
Hello. Who're you, please?
D.
Hello. Thank you for calling.
【单选题】If Mary prefers bananas to plums and plums to peaches, but is indifferent between bananas and oranges, she
A.
prefers oranges to peaches
B.
prefers plums to oranges
C.
is indifferent between oranges and plums
D.
is indifferent between oranges and peaches.
【单选题】听力原文:Man: I know I'm late. I'm sorry. I left home early, but traffic was tied up all over the city because of the weather, and my bus was late again. Woman: That may be, but this has really gone too f...
A.
He walks.
B.
He takes abus.
C.
He rides a train.
D.
He drives a car.
【单选题】数据仓库所存储的数据,通常具有一定特点,下列哪些不属于其特点的()
A.
经常修改数据项的值
B.
数据大都反应历史
C.
面向特定主题
D.
数据来源多样
【单选题】下列哪一项不属于大数据的特点()。
A.
成本高
B.
数量大
C.
多样
D.
高速
【单选题】数据仓库所存储的数据,通常具有一定特点,下列哪些不属于其特点的()
A.
数据大都反应历史
B.
面向特定主题
C.
数据来源多样
D.
经常修改数据项的值
【单选题】Jenny is interested ______ math while Mary prefers English ______ math. [     ]
A.
at; on
B.
about; on
C.
in; to
D.
at; in
【单选题】下列表述中哪一项不属于分布式数据库的特点? ( )
A.
系统的可靠性高、可用性好
B.
对数据通信的处理使得局部应用的响应速度很慢
C.
系统开销较大,主要花在通信部分.
D.
数据的安全性和保密性较难处理
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