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【判断题】
根据下面的程序,写明该程序执行的结果是对还是错( ) #------ex4-2.sh----- #!/bin/bash a=12 b=13 c=12 d=13 test "$a" -gt "$b" echo "$?" 该程序的执行结果为:1
A.
正确
B.
错误
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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 called you at 6 o'clock yesterday evening, but nobody answered. — I'm sorry. I my friend download the movie Kung Fu PandaⅡwhen the telephone rang,
A.
would help    
B.
helped   
C.
was helping
【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】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】--- What about inviting Mary to our party? --- You’d better not. She prefers to be ____, so far as I know.
A.
tested out
B.
rung up
C.
left alone
D.
turned around
【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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