题目内容

Making sure that Bluetooth and these other devices don’t interfere with one another can be

A. Y
B. N
C. NG

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Spread-spectrum frequency can transmit the same frequency at the same time for more than one device.

A. Y
B. N
C. NG

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What is the author's attitude towards computers？

A. positive.
B. negative.
C. neutral.
D. prejudiced.

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Bluetooth networking transmits data via low-power radio waves between 402 GHz and 480 GHz.

A. Y
B. N
C. NG

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By saying "...computation could drive an even deeper wedge between the rich and poor" (Line 5, Para. 4) the author means______.

A. people are getting richer and richer
B. there will be a small gap between rich and poor
C. the gap between rich and poor is getting larger and larger
D. it's time to close up the gap between the rich and poor

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Making sure that Bluetooth and these other devices don’t interfere with one another can be

A. Y B. N C. NG

Spread-spectrum frequency can transmit the same frequency at the same time for more than one device.

What is the author's attitude towards computers？

Bluetooth networking transmits data via low-power radio waves between 402 GHz and 480 GHz.

By saying "...computation could drive an even deeper wedge between the rich and poor" (Line 5, Para. 4) the author means______.

A. Y
B. N
C. NG