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【单选题】
关于埋弧焊,说法正确的是A.
可焊接铝、钛等易氧化金属及其合金
B.
对焊件装配质量要求不高
C.
适合焊接薄板及长焊缝
D.
焊件变形小
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反馈参考答案：
举一反三
【判断题】The computer that is not connected to the Internet can be completely secure.
A.
正确
B.
错误
【简答题】Why
does Helen say surfing the Internet can be distracting?
【判断题】Living in the age of Big Data, all the information on the Internet can be trusted.
A.
正确
B.
错误
【单选题】Web pages in the Internet can be modelled as a graph in that:
A.
Each web page (together with its contents) can be considered as a node
B.
Each hyperlink pointing from one web page to another can be considered as a link
C.
Web pages stored in different computers form an information network representing the underlying computer network
D.
All of the options given
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