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【单选题】
R、L、C串联电路产生谐振的条件是( )。A.
R=XL=XC
B.
XL=XC
C.
R=XC
D.
R=XL
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A.
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B.
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C.
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D.
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A.
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B.
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C.
成绩 Between 60 And 81
D.
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