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【简答题】
三相五柱式电压互感器二次侧辅助绕组接线为开口三角形,所反映的是()电压。
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【单选题】The challenge to Internet advertisers is to create ads that are______.
A.
quick to update
B.
pleasant to look at
C.
easy to remember
D.
convenient to access
【单选题】According to the author, the trend for the employment in the Internet world is that more people will______.
A.
get employed in the Internet world and begin to love it
B.
quit jobs in the Internet world and start their own business
C.
become out of work in the Internet world
D.
continue to work in the Internet world,: waiting for another dotcom boom
【简答题】The Internet is based on a connectionless end-to-end packet service, which traditionally provided best-effort means of data ( )using the Transmission Control Protocol/Internet Protocol Suite. Although...
【简答题】Believing in the miracles of multimedia and Internet technology, some predict that the profession of teaching will disappear in the near future. But others claim that teachers will never be replaced. ...
【多选题】高中信息技术学科核心素养的组成要素:
A.
信息意识
B.
信息道德
C.
计算思维
D.
信息能力
E.
数字化学习与创新
F.
信息社会责任
G.
信息知识
【单选题】兆欧表的三个接线端中,哪个接线端是接线路的端
A.
E端
B.
G端
C.
L端
D.
都可以
【单选题】下面不是Internet的接入方式的是(    )。
A.
P2P    
B.
DDN    
C.
LAN    
D.
ADSL
【多选题】高中信息技术学科核心素养的组成( )
A.
信息意识
B.
计算思维
C.
信息能力
D.
信息社会责任
E.
数字化学习与创新
F.
信息道德
【单选题】在关系型数据库中,引用完整性约束用来保持表之间的已定义的关系。保证引用完整性的手段是(    )
A.
默认约束
B.
外键约束
C.
非空约束
D.
检查约束
【简答题】We know from the text that the Mars mission is _____. [A] one of NASA’s internet projects [B] an expedition to Mars [C] the infrastructure of the interplanetary Internet [D] to create an architecture ...
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