多项选择题

The causes of contamination include ( ).

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单项选择题

According to the video, Veracity in the 5V’s means ( ).
A、the quality of these data must be true
B、the huge amount of data increases with a high speed in certain time
C、the amount of data largely increases annually
D、the sorts of data are greatly different

不定项选择

Dynamo操作的实现是靠节点命令和命令之间的连缀实现的

A．错误
B．正确