Why can Li-Fi related devices be used on a plane?A.For they are not as heavy as the tradit

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Why can Li-Fi related devices be used on a plane?

A.For they are not as heavy as the traditional ones.

B.For they don"t interfere with the equipment.

C.For they are cheaper.

D.For they are a new technology.

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热搜:a是b的充分条件,b是a的必要条件吗