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【单选题】
有关电感线圈（或RL串联电路）与电容并联的正弦电路谐振时的特点的表述中错误的是（）。A.
谐振时电路的阻抗｜Z｜最大，电流I0最小
B.
谐振时电感线圈中的电流的无功分量与电容电流大小相等，方向相反，相互抵消，电路中的总电流等于电感线圈中电流的有功分量
C.
谐振时电路与电源之间不发生往返的能量互换，能量互换完全发生在电感线圈与电容之间
D.
谐振时电路的功率因数等于1
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举一反三
【单选题】下丘脑病变累及视上核时,尿量和尿的浓缩的改变是:
A.
尿量增加、尿液稀释
B.
尿量增加、尿液浓缩
C.
尿量减少、尿液稀释
D.
尿量不变、尿液浓缩
E.
以上均不是
【简答题】Who has got a pen?
【单选题】—_______Tom got _______new books? —Yes, he ______got ______. [ ]
A.
Has, any; has, some
B.
Is, any; is some
C.
Is, some; has, any
D.
Has, some; is, any
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A.
or
B.
but
C.
so
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A.
does not care about politics.
B.
is a little idealistic but a real and rich business man.
C.
indulges himself in environmental protection.
D.
has been harboring the plan since he was a young man.
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A.
has been got round
B.
got round
C.
was got round
D.
has got round
【单选题】The story ______, and everybody knows about it.
A.
has got round
B.
got round
C.
was got round
D.
has been got round
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