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搜题
【单选题】
I think pop-up ads on the Internet and spam in my e-mail inbox are terribly _______ – so much so that it might be an invasion of privacy.A.
offensive
B.
effective
C.
defensive
D.
interactive
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【简答题】感知层的技术有哪些?
【简答题】感知层的技术有哪些？