题目内容

设某串联谐振电路与并联谐振电路具有相同的谐振频率,且在谐振频率处两个电路具有相同的阻抗,则当频率低于谐振频率时,串联谐振电路的阻抗模值将比并联谐振电路的阻抗模值要()

A. 大
B. 相等
C. 小
D. 不定

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C. 可控器件
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“There was music from my neighbor’s house through the summer nights. In his blue gardens men and girls came and went like moths among the whisperings and the champagne and the stars. At high tide in the afternoon I watched his guests diving from the tower of his raft, or taking the sun on the hot sand of his beach while his two motor—boats slit the waters of the Sound, drawing aquaplanes over cataracts of foam. On week—ends his Rolls—Royce became an omnibus, bearing parties to and from the city between nine in the morning and long past midnight, while his station wagon scampered like a brisk yellow bug to meet all trains. And on Mondays eight servants, including an extra gardener, toiled all day with mops and scrubbing—brushes and hammers and garden—shears, repairing the ravages of the night before.” What can you imply by reading this passage?

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