单项选择题

According to Ohm’s Law， which of the following is correct？（）

A.As voltage increases， resistance decreases
B.As amperage decreases， resistance decreases
C.As resistance decreases， amperage increases
D.As resistance increases， voltage increases

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单项选择题

When configuring surround sound systems， speaker delay is used to compensate for speaker（）.

A.distance
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C.size
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单项选择题

Which of the following BEST describes CAT5e？（）

A.Contains four pair of wires of various gauge
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