问题
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The operation of paralleling two alternators requires() to be equal and also in phaseA.th
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What is talked about in the beginning of the passage?A.The utilization of alternative ener
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What are the two speakers mainly talking about?A.Recycling of used batteries.B.Environment
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What are the two students talking about?A.The development of the coffee industry.B.The cof
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What are the man and the woman mainly discussing?A.An alternative use of fuel oil.B.A way
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Of the following what are the two types of phonetics______.